{"id":13549,"date":"2026-05-20T10:03:32","date_gmt":"2026-05-20T04:33:32","guid":{"rendered":"https:\/\/www.gmtasoftware.com\/blog\/?p=13549"},"modified":"2026-08-04T17:09:05","modified_gmt":"2026-08-04T11:39:05","slug":"android-app-to-harmonyos-migration","status":"publish","type":"post","link":"https:\/\/www.gmtasoftware.com\/blog\/android-app-to-harmonyos-migration\/","title":{"rendered":"How Long Does Android to HarmonyOS Migration Take?"},"content":{"rendered":"<div class=\"blog_summry\">\n<div class=\"blog_summry_box\">\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-13550\" src=\"https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-1920-x-630-px-1.webp\" alt=\"harmonyos migration\" width=\"1920\" height=\"630\" srcset=\"https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-1920-x-630-px-1.webp 1920w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-1920-x-630-px-1-300x98.webp 300w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-1920-x-630-px-1-1024x336.webp 1024w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-1920-x-630-px-1-768x252.webp 768w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-1920-x-630-px-1-1536x504.webp 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/p>\n<p><strong>Quick Summary<\/strong><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>HarmonyOS migration is not just a simple port. It is effectively a second app development.<\/li>\n<li>ArkTS (TypeScript-based, HarmonyOS-specific) is the primary language.<\/li>\n<li>UI rewrite accounts for 35 to 45 per cent of total effort.<\/li>\n<li>Service migration from Google Mobile Services to Huawei Mobile Services (HMS) adds another 30 to 40 per cent<\/li>\n<li>A simple app takes about 600 to 800 developer hours. On the other hand, an advanced fintech or even the leading banking app may take around 4,000 hours to build.<\/li>\n<li>DevEco Studio is capable, but the support ecosystem is nowhere close to Android Studio&#8217;s maturity.<\/li>\n<li>HarmonyOS global market share, 4% globally; 18% in China (2025 average).<\/li>\n<li>Registered HarmonyOS developers, 8 million+ as of June 2025.<\/li>\n<li>Minimum migration timeline, 300,000+ as of November 2025.<\/li>\n<li>Hidden costs include testing, missing third-party libraries, and device fragmentation. These regularly inflate estimates by 20 to 30 per cent.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<p><span style=\"font-weight: 400;\">Planning for a seamless <\/span><b>HarmonyOS migration<\/b><span style=\"font-weight: 400;\">? Most teams that plan for this approach often ask two questions. One is: how long it will take for the migration and how much it will cost.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Before diving into the details, you should know what HarmonyOS is. It is Huawei\u2019s proprietary operating system with its own kernel, runtime, language (ArkTS), and service ecosystem. It is a completely independent platform, not an Android variant.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On timelines: a simple app takes roughly 3 to 4 months, while a complex fintech or enterprise app requires at least 6 to 12 months.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">However, the final answers depend heavily on your Android app&#8217;s complexity, the depth of Google service dependencies, and whether your team has prior HarmonyOS experience. This <\/span><a title=\"HarmonyOS Mobile App Development\" href=\"https:\/\/www.gmtasoftware.com\/services\/mobile-app-development\"><b>HarmonyOS app development<\/b><\/a><span style=\"font-weight: 400;\"> and the complete migration details guide give you honest, detailed answers to all of it.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_Unvarnished_Truth_Its_Not_a_Port_Its_a_Rewrite\"><\/span><b>The Unvarnished Truth: It\u2019s Not a Port, It\u2019s a Rewrite<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Most planning documents skip this part entirely, and that is exactly why timelines break.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The direct answer: HarmonyOS NEXT is not Android. You cannot port your app. You can rebuild it.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When teams research <\/span><b>how to migrate an Android app to HarmonyOS<\/b><span style=\"font-weight: 400;\">, they assume the process works like switching frameworks or updating an SDK. That assumption is wrong, and it is the single most common reason migration projects run over budget and over schedule.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Now, coming to the part, why is HarmonyOS NEXT architecturally incompatible with Android?\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">HarmonyOS versions 1 through 4 ran on an Android compatibility layer. That layer no longer exists. In October 2024, HarmonyOS NEXT launched commercially and continues through HarmonyOS 5 and HarmonyOS 6. These are a clean-slate operating system and do not support APKs. It does not run<\/span><b> HarmonyOS Android apps<\/b><span style=\"font-weight: 400;\"> natively under the old compatibility line.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">What this means practically for your migration:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">HarmonyOS Android apps cannot run directly on HarmonyOS NEXT devices<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Every screen, component, and navigation flow must be fully rebuilt in ArkUI and ArkTS<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Every Google Mobile Services dependency must be replaced with a Huawei Mobile Services equivalent<\/span><\/li>\n<\/ul>\n<p><strong>How to Understand the Real Things?\u00a0<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">The WeChat example makes these points more solid. WeChat has almost <\/span><a href=\"https:\/\/www.businessofapps.com\/data\/wechat-statistics\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">1.34 billion users<\/span><\/a><span style=\"font-weight: 400;\"> and is one of the largest mobile engineering teams in the world. Migrating WeChat to HarmonyOS NEXT requires rewriting the functional code so it can be easily rewritten from scratch.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Even so:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">The migration required a full functional rewrite from scratch<\/span><\/li>\n<li><span style=\"font-weight: 400;\">It took several months and a significant capital investment<\/span><\/li>\n<li><span style=\"font-weight: 400;\">As of August 2025, the HarmonyOS version is still missing nearly 30 features compared to its Android counterpart, including real-time location sharing and image text recognition<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">As you are learning how to scope a HarmonyOS migration correctly, you are not porting an app. You are building a second product that references the first. Budget, timeline, and team size need to reflect that from day one.<\/span><\/p>\n<p><a href=\"https:\/\/www.gmtasoftware.com\/contact-us\"><img decoding=\"async\" class=\"alignnone size-full wp-image-13551\" src=\"https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Planning-a-HarmonyOS-Migration-in-2026_.webp\" alt=\"Migrate your android app to harmonyos with industry experts \" width=\"1050\" height=\"300\" srcset=\"https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Planning-a-HarmonyOS-Migration-in-2026_.webp 1050w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Planning-a-HarmonyOS-Migration-in-2026_-300x86.webp 300w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Planning-a-HarmonyOS-Migration-in-2026_-1024x293.webp 1024w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Planning-a-HarmonyOS-Migration-in-2026_-768x219.webp 768w\" sizes=\"(max-width: 1050px) 100vw, 1050px\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Where_the_Work_Actually_Piles_Up\"><\/span><b>Where the Work Actually Piles Up\u00a0<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Understanding the effort distribution before you start will prevent the most common under-scoping mistakes. Below is a clear table that can guide you on effort distribution at a glance.\u00a0<\/span><\/p>\n\n<div class=\"wpdt-c row wpDataTableContainerSimpleTable wpDataTables wpDataTablesWrapper\n\"\n    >\n        <table id=\"wpdtSimpleTable-720\"\n           style=\"border-collapse:collapse;\n                   border-spacing:0px;\"\n           class=\"wpdtSimpleTable wpDataTable\"\n           data-column=\"3\"\n           data-rows=\"5\"\n           data-wpID=\"720\"\n           data-responsive=\"0\"\n           data-has-header=\"0\">\n\n                    <tbody>        <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"A1\"\n                    data-col-index=\"0\"\n                    data-row-index=\"0\"\n                    style=\" width:33.333333333333%;                    padding:10px;\n                    \"\n                    >\n                                        Migration Phase                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"B1\"\n                    data-col-index=\"1\"\n                    data-row-index=\"0\"\n                    style=\" width:33.333333333333%;                    padding:10px;\n                    \"\n                    >\n                                        Share of Total Project                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"C1\"\n                    data-col-index=\"2\"\n                    data-row-index=\"0\"\n                    style=\" width:33.333333333333%;                    padding:10px;\n                    \"\n                    >\n                                        What Is Involved                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A2\"\n                    data-col-index=\"0\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        UI migration                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B2\"\n                    data-col-index=\"1\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        35 to 45%                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C2\"\n                    data-col-index=\"2\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        XML to ArkUI conversion, navigation, state management, and custom components                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A3\"\n                    data-col-index=\"0\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Service migration (GMS to HMS)                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B3\"\n                    data-col-index=\"1\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        30 to 40%                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C3\"\n                    data-col-index=\"2\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Replacing all Google services with HMS equivalents, server-side updates                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A4\"\n                    data-col-index=\"0\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Language learning and onboarding                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B4\"\n                    data-col-index=\"1\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        15 to 20%                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C4\"\n                    data-col-index=\"2\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        ArkTS syntax, DevEco Studio tooling, AppGallery submission process                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A5\"\n                    data-col-index=\"0\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        QA and testing                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B5\"\n                    data-col-index=\"1\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Runs throughout                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C5\"\n                    data-col-index=\"2\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Device matrix testing, regression, performance, edge cases                    <\/td>\n                                        <\/tr>\n                    <\/table>\n<\/div><style id='wpdt-custom-style-720'>\n.wpdt-tc-FFFFFF { color: #FFFFFF !important;}\n.wpdt-bc-2196F3 { background-color: #2196F3 !important;}\n<\/style>\n\n<h3><span class=\"ez-toc-section\" id=\"UI_Migration_35_to_45_of_Effort\"><\/span><b>UI Migration (35 to 45% of Effort):\u00a0<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">This is consistently where teams spend more hours than they planned.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Android builds UIs imperatively using XML layouts. You define a view hierarchy in XML, then push state changes to individual views from code. Every update is manual.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">ArkUI is fully declarative. You describe what the interface should look like based on the current state, and the current framework handles the rendering automatically.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">ArkUI vs Android XML layout is not just a syntax difference; rather, a complete paradigm shift in how UI state, rendering, and component lifecycle are properly handled.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Developers familiar with Jetpack Compose or SwiftUI adapt faster. Developers whose entire career is XML-based Android need 4 to 6 weeks to become productive with ArkUI.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"The_conversion_gap_in_practice\"><\/span><b>The conversion gap in practice:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"font-weight: 400;\">Every Android screen needs individual reimplementation<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Custom components, Material Design elements, and Navigation Back Stacks all require their own ArkUI equivalents<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Animation definitions and seamless transition logic must be rebuilt<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Huawei\u2019s A2H Converter automates the XML-to-ArkUI conversion using the innovative AI-based layout mapping. It also helps achieve roughly 89% success on standard component conversions. On the other hand, the remaining 11% requires proper and manual intervention by skilled developers.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On a 200-screen application, that means approximately 22 screens need manual work after the pass. For apps with many custom components, the manual fallout rate also increases.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The A2H Converter path is still the fastest route for most projects. But it needs to be planned for explicitly. It is not a background task.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A real performance benefit worth noting: Taobao reported that its ArkUI-built checkout page runs 1.5 times faster than the Android equivalent. The migration has some significant performance upside, not just platform requirements.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Service_Migration_30_to_40_of_Effort\"><\/span><b>Service Migration (30 to 40% of Effort):\u00a0<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">This phase is where unexpected blockers most often appear. Every Google service your Android app relies on needs a Huawei Mobile Services replacement. Some substitutions are straightforward. Others are not.<\/span><\/p>\n<p><b>GMS to HMS Replacement Map<\/b><\/p>\n<p><span style=\"font-weight: 400;\">\n<div class=\"wpdt-c row wpDataTableContainerSimpleTable wpDataTables wpDataTablesWrapper\n\"\n    >\n        <table id=\"wpdtSimpleTable-719\"\n           style=\"border-collapse:collapse;\n                   border-spacing:0px;\"\n           class=\"wpdtSimpleTable wpDataTable\"\n           data-column=\"3\"\n           data-rows=\"11\"\n           data-wpID=\"719\"\n           data-responsive=\"0\"\n           data-has-header=\"0\">\n\n                    <tbody>        <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell wpdt-tc-FFFFFF wpdt-bold wpdt-bc-2196F3\"\n                                            data-cell-id=\"A1\"\n                    data-col-index=\"0\"\n                    data-row-index=\"0\"\n                    style=\" width:33.333333333333%;                    padding:10px;\n                    \"\n                    >\n                                        Google Service                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-tc-FFFFFF wpdt-bold wpdt-bc-2196F3\"\n                                            data-cell-id=\"B1\"\n                    data-col-index=\"1\"\n                    data-row-index=\"0\"\n                    style=\" width:33.333333333333%;                    padding:10px;\n                    \"\n                    >\n                                        HMS Equivalent                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-tc-FFFFFF wpdt-bold wpdt-bc-2196F3\"\n                                            data-cell-id=\"C1\"\n                    data-col-index=\"2\"\n                    data-row-index=\"0\"\n                    style=\" width:33.333333333333%;                    padding:10px;\n                    \"\n                    >\n                                        Migration Complexity                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A2\"\n                    data-col-index=\"0\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Google Maps                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B2\"\n                    data-col-index=\"1\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Huawei Map Kit                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C2\"\n                    data-col-index=\"2\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Medium                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A3\"\n                    data-col-index=\"0\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Firebase Cloud Messaging                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B3\"\n                    data-col-index=\"1\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Huawei Map Kit                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C3\"\n                    data-col-index=\"2\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Medium (requires server-side changes)                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A4\"\n                    data-col-index=\"0\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Google Sign-In                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B4\"\n                    data-col-index=\"1\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Huawei Account Kit                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C4\"\n                    data-col-index=\"2\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Low to medium                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A5\"\n                    data-col-index=\"0\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Firebase Analytics                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B5\"\n                    data-col-index=\"1\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        AppGallery Connect Analytics                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C5\"\n                    data-col-index=\"2\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Low\u00a0                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A6\"\n                    data-col-index=\"0\"\n                    data-row-index=\"5\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Google Pay                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B6\"\n                    data-col-index=\"1\"\n                    data-row-index=\"5\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Huawei Pay                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C6\"\n                    data-col-index=\"2\"\n                    data-row-index=\"5\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        High (payment compliance requirements)                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A7\"\n                    data-col-index=\"0\"\n                    data-row-index=\"6\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Firebase Realtime Database\u00a0                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B7\"\n                    data-col-index=\"1\"\n                    data-row-index=\"6\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Huawei Cloud AGC                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C7\"\n                    data-col-index=\"2\"\n                    data-row-index=\"6\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Medium to high                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A8\"\n                    data-col-index=\"0\"\n                    data-row-index=\"7\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Google ML Kit                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B8\"\n                    data-col-index=\"1\"\n                    data-row-index=\"7\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Huawei ML Kit                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C8\"\n                    data-col-index=\"2\"\n                    data-row-index=\"7\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Varies by feature                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A9\"\n                    data-col-index=\"0\"\n                    data-row-index=\"8\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        AdMob                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B9\"\n                    data-col-index=\"1\"\n                    data-row-index=\"8\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Huawei Ads Kit                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C9\"\n                    data-col-index=\"2\"\n                    data-row-index=\"8\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Low                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A10\"\n                    data-col-index=\"0\"\n                    data-row-index=\"9\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Firebase Auth                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B10\"\n                    data-col-index=\"1\"\n                    data-row-index=\"9\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Huawei Account Kit + custom logic                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C10\"\n                    data-col-index=\"2\"\n                    data-row-index=\"9\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Medium\u00a0                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A11\"\n                    data-col-index=\"0\"\n                    data-row-index=\"10\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Google Drive API                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B11\"\n                    data-col-index=\"1\"\n                    data-row-index=\"10\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Huawei Drive Kit                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C11\"\n                    data-col-index=\"2\"\n                    data-row-index=\"10\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Medium\u00a0                    <\/td>\n                                        <\/tr>\n                    <\/table>\n<\/div><style id='wpdt-custom-style-719'>\n.wpdt-tc-FFFFFF { color: #FFFFFF !important;}\n.wpdt-bc-2196F3 { background-color: #2196F3 !important;}\n<\/style>\n<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The harder problem is third-party SDKs with no HarmonyOS NEXT equivalent at all. Payment gateways without HMS support, analytics platforms without ArkTS SDKs, and niche API providers who have not updated for HarmonyOS NEXT all create hard blocks that require custom solutions.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Run a full dependency audit before migration begins. This takes 2 to 3 weeks and will prevent the most expensive surprises. Teams that skip this step routinely discover blocking dependencies right before a planned delivery date.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Language_Learning_15-20_of_effort\"><\/span><b>Language Learning (15-20% of effort):<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">ArkTS is the primary programming language for any <\/span><b><a title=\"next.js app development\" href=\"https:\/\/www.gmtasoftware.com\/services\/nextjs-development-services-company\">HarmonyOS NEXT developer<\/a>.<\/b><span style=\"font-weight: 400;\"> It is built on TypeScript and keeps much of that familiar syntax, but it adds mandatory type annotations, HarmonyOS-specific APIs, concurrency controls, and custom decorators for state binding.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Importantly, ArkTS is not a cross-platform web-view technology. Compiled ArkTS produces binary output. It properly runs on the device, not in a browser. This is a native language for native apps.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Below is a timetable that might provide a view of the <\/span><b>HarmonyOS development time estimate<\/b><\/p>\n\n<div class=\"wpdt-c row wpDataTableContainerSimpleTable wpDataTables wpDataTablesWrapper\n\"\n    >\n        <table id=\"wpdtSimpleTable-718\"\n           style=\"border-collapse:collapse;\n                   border-spacing:0px;\"\n           class=\"wpdtSimpleTable wpDataTable\"\n           data-column=\"2\"\n           data-rows=\"5\"\n           data-wpID=\"718\"\n           data-responsive=\"0\"\n           data-has-header=\"0\">\n\n                    <tbody>        <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"A1\"\n                    data-col-index=\"0\"\n                    data-row-index=\"0\"\n                    style=\" width:50%;                    padding:10px;\n                    \"\n                    >\n                                        Developer Background                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"B1\"\n                    data-col-index=\"1\"\n                    data-row-index=\"0\"\n                    style=\" width:50%;                    padding:10px;\n                    \"\n                    >\n                                        Productive ArkTS Output Timeline                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A2\"\n                    data-col-index=\"0\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Strong TypeScript experience                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B2\"\n                    data-col-index=\"1\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        3 to 4 weeks to productive output                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A3\"\n                    data-col-index=\"0\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Kotlin or Java, no TypeScript                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B3\"\n                    data-col-index=\"1\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        6 to 8 weeks to productive output                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A4\"\n                    data-col-index=\"0\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        React Native or Flutter experience                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B4\"\n                    data-col-index=\"1\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        3 to 5 weeks (declarative model transfers)                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A5\"\n                    data-col-index=\"0\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        JetBrains IDE experience                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B5\"\n                    data-col-index=\"1\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Adapts faster to DevEco Studio (same IDE platform)                    <\/td>\n                                        <\/tr>\n                    <\/table>\n<\/div><style id='wpdt-custom-style-718'>\n.wpdt-tc-FFFFFF { color: #FFFFFF !important;}\n.wpdt-bc-2196F3 { background-color: #2196F3 !important;}\n<\/style>\n\n<p><span style=\"font-weight: 400;\">Beyond language syntax, every <\/span><b>HarmonyOS developer<\/b><span style=\"font-weight: 400;\"> also needs to learn:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">DevEco Studio&#8217;s debugging and performance profiling tools<\/span><\/li>\n<li><span style=\"font-weight: 400;\">HarmonyOS NEXT&#8217;s component lifecycle (different from Android Activity\/Fragment model)<\/span><\/li>\n<li><span style=\"font-weight: 400;\">The <\/span><b>Hvigor build tool<\/b><span style=\"font-weight: 400;\"> and <\/span><b>the Ohpm package manager<\/b><span style=\"font-weight: 400;\"> (both TypeScript\/Node-based)\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">AppGallery Connect submission and review process<\/span><\/li>\n<li><span style=\"font-weight: 400;\">HMS Kit integration patterns for each service have been replaced<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Skipping this ramp-up estimate is one of the most common reasons that the first sprints dramatically underdeliver.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Real_Effort_Estimates\"><\/span><b>Real Effort Estimates\u00a0<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">These figures assume developers with solid mobile experience who are new to HarmonyOS NEXT. All costs use $80\/hour as a reference rate for Asia-based contractors.\u00a0<\/span><\/p>\n<p><strong>Effort and Cost by App Type<\/strong><\/p>\n\n<div class=\"wpdt-c row wpDataTableContainerSimpleTable wpDataTables wpDataTablesWrapper\n\"\n    >\n        <table id=\"wpdtSimpleTable-717\"\n           style=\"border-collapse:collapse;\n                   border-spacing:0px;\"\n           class=\"wpdtSimpleTable wpDataTable\"\n           data-column=\"5\"\n           data-rows=\"4\"\n           data-wpID=\"717\"\n           data-responsive=\"0\"\n           data-has-header=\"0\">\n\n                    <tbody>        <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"A1\"\n                    data-col-index=\"0\"\n                    data-row-index=\"0\"\n                    style=\" width:20%;                    padding:10px;\n                    \"\n                    >\n                                        App Type                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"B1\"\n                    data-col-index=\"1\"\n                    data-row-index=\"0\"\n                    style=\" width:20%;                    padding:10px;\n                    \"\n                    >\n                                        Developer Hours                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"C1\"\n                    data-col-index=\"2\"\n                    data-row-index=\"0\"\n                    style=\" width:20%;                    padding:10px;\n                    \"\n                    >\n                                        Team Size                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"D1\"\n                    data-col-index=\"3\"\n                    data-row-index=\"0\"\n                    style=\" width:20%;                    padding:10px;\n                    \"\n                    >\n                                        Timeline                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"E1\"\n                    data-col-index=\"4\"\n                    data-row-index=\"0\"\n                    style=\" width:20%;                    padding:10px;\n                    \"\n                    >\n                                        Estimated Cost                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A2\"\n                    data-col-index=\"0\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Simple app                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B2\"\n                    data-col-index=\"1\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        600 to 800 hrs                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C2\"\n                    data-col-index=\"2\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        1 developer                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"D2\"\n                    data-col-index=\"3\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        3 to 4 months                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"E2\"\n                    data-col-index=\"4\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        $48K to $64K                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A3\"\n                    data-col-index=\"0\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Medium complexity app                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B3\"\n                    data-col-index=\"1\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        1,800 to 2,500 hrs                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C3\"\n                    data-col-index=\"2\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        2 to 3 developers                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"D3\"\n                    data-col-index=\"3\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        4 to 6 months                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"E3\"\n                    data-col-index=\"4\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        $144K to $200K                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A4\"\n                    data-col-index=\"0\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Complex app                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B4\"\n                    data-col-index=\"1\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        4,000+ hrs                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C4\"\n                    data-col-index=\"2\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        4 to 5 developers                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"D4\"\n                    data-col-index=\"3\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        6 to 12 months                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"E4\"\n                    data-col-index=\"4\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        $320K+                    <\/td>\n                                        <\/tr>\n                    <\/table>\n<\/div><style id='wpdt-custom-style-717'>\n.wpdt-tc-FFFFFF { color: #FFFFFF !important;}\n.wpdt-bc-2196F3 { background-color: #2196F3 !important;}\n<\/style>\n\n<p><b>Simple App (News Reader, Weather, Basic E-Commerce Catalogue)<\/b><\/p>\n<p><b>Hours:<\/b><span style=\"font-weight: 400;\"> 600 to 800 <\/span><b>Timeline:<\/b><span style=\"font-weight: 400;\"> around 3 to 4 months with 1 developer. Similarly, the <\/span><b>Android to HarmonyOS migration cost <\/b><span style=\"font-weight: 400;\">also varies between $48,000 to $64,000.\u00a0\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Where hours go on a simple app:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">UI rewrite: approximately 50%<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Service integration and backend connections: approximately 30%<\/span><\/li>\n<li><span style=\"font-weight: 400;\">QA, device testing, and AppGallery review take approximately 20%<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Note: AppGallery review takes almost 1 to 2 weeks and should be planned into the proper project schedule, not treated as a buffer at the end.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Medium_Complexity_App_Social_Messaging_Fitness_Tracker_On-Demand\"><\/span><b>Medium Complexity App (Social, Messaging, Fitness Tracker, On-Demand)<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The development hours<\/span><b> may vary <\/b><span style=\"font-weight: 400;\">from 1,800 to 2,500 hrs for a medium complexity app. On the other hand, the <\/span><b>timeline <\/b><span style=\"font-weight: 400;\">differs from 4 to 6 months, with 2 to 3 developers. Also,<\/span> <span style=\"font-weight: 400;\">the cost for developing such apps<\/span> <span style=\"font-weight: 400;\">may vary between $144,000 to $200,000.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">However, some additional complexity drivers at this tier are:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Real-time data syncing and WebSocket handling<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Offline storage and handling sync logic<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Push notification integration with Huawei Push Kit<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Certain background services and scheduled task management<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Multi-device UI adaptation across different systems, such as &#8211; phone, tablet, and wearable<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Each of these has HarmonyOS NEXT-specific implementation patterns. Furthermore, the budget research time also changes per feature, not just during the coding time.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Complex_App_Banking_Enterprise_Gaming_with_Heavy_Graphics\"><\/span><b>Complex App (Banking, Enterprise, Gaming with Heavy Graphics)<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The <\/span><b>timing<\/b><span style=\"font-weight: 400;\"> may vary<\/span><b>:<\/b><span style=\"font-weight: 400;\"> 4,000 or more. The <\/span><b>timeline <\/b><span style=\"font-weight: 400;\">varies from 6 to 12 months, with 4 to 5 developers. <\/span><b>Cost:<\/b><span style=\"font-weight: 400;\"> $320,000 and above<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The <\/span><b>HarmonyOS migration effort for large apps<\/b><span style=\"font-weight: 400;\"> compounds across multiple extra phases:\u00a0<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Security audit and penetration testing: 3 to 4 weeks<\/span><\/li>\n<li><span style=\"font-weight: 400;\">China data residency compliance: 2 to 3 weeks<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Custom graphics pipeline rebuilds for games: 4 to 6 weeks<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Banking API and local payment system integration: 3 to 4 weeks<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Enterprise backend rearchitecting: varies<\/span><\/li>\n<\/ul>\n<p><b>A useful benchmark:<\/b><span style=\"font-weight: 400;\"> Organisations adopting HarmonyOS mini programs from scratch typically achieve 40 to 50% lower development costs compared to building separate native applications. This applies to greenfield builds only. Migrating from an existing Android codebase carries the full architectural complexity of the existing app and does not benefit from these savings in the same way.<\/span><\/p>\n<p><a href=\"https:\/\/www.gmtasoftware.com\/contact-us\"><img decoding=\"async\" class=\"alignnone size-full wp-image-13552\" src=\"https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Not-Sure-How-Complex-Your-Migration-Really-Is_.webp\" alt=\"Migrate your android app to harmonyos with industry experts \" width=\"1050\" height=\"300\" srcset=\"https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Not-Sure-How-Complex-Your-Migration-Really-Is_.webp 1050w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Not-Sure-How-Complex-Your-Migration-Really-Is_-300x86.webp 300w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Not-Sure-How-Complex-Your-Migration-Really-Is_-1024x293.webp 1024w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Not-Sure-How-Complex-Your-Migration-Really-Is_-768x219.webp 768w\" sizes=\"(max-width: 1050px) 100vw, 1050px\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_DevEco_Studio_Toolchain_What_Helps_and_What_Doesnt\"><\/span><b>The DevEco Studio Toolchain (What Helps and What Doesn&#8217;t)<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">DevEco Studio is Huawei&#8217;s one-stop integrated development environment for <\/span><b>HarmonyOS app development.<\/b><span style=\"font-weight: 400;\"> It is the required IDE for all HarmonyOS NEXT work, and it has improved significantly since the initial release.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Built on the JetBrains IDE platform, it delivers a familiar and comfortable experience for developers already used to working on IntelliJ IDEA or Android Studio.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_DevEco_Studio_includes\"><\/span><b>What DevEco Studio includes:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"font-weight: 400;\">Visual layout designers with real-time device preview across phone, tablet, watch, and smart screen profiles<\/span><\/li>\n<li><span style=\"font-weight: 400;\">ARM-based emulator for local testing<\/span><\/li>\n<li><b>Cloud-based emulator<\/b><span style=\"font-weight: 400;\"> accessible from DevEco Studio&#8217;s Device Manager for developers based in China. Developers outside China currently have limited emulator options and typically rely on real devices for testing\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Automated testing framework support<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Performance profiling tools for identifying rendering and memory issues<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Multi-language debugging for ArkTS, C++, and JavaScript (JetBrains toolchain support)<\/span><\/li>\n<li><b>Hvigor build tool<\/b><span style=\"font-weight: 400;\"> for compiling and packaging HarmonyOS apps. It is TypeScript and Node-based, which makes it simpler to configure than Gradle, though build speeds can lag<\/span><\/li>\n<li><b>ohpm package manager<\/b><span style=\"font-weight: 400;\"> for managing app dependencies, configured through <\/span><i><span style=\"font-weight: 400;\">oh-package.json5<\/span><\/i><span style=\"font-weight: 400;\"> files. Works similarly to npm but is scoped entirely to the HarmonyOS NEXT ecosystem<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Build a variant management comparable to Android&#8217;s products\u00a0<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Where_the_toolchain_still_lags\"><\/span><b>Where the toolchain still lags:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The IDE is functional. The support ecosystem behind it is not at Android Studio&#8217;s maturity level.<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Stack Overflow has years of indexed, verified Android answers. The HarmonyOS NEXT equivalent community is a fraction of that size.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Official documentation quality has improved, but it still has some gaps. These gaps are prominent, particularly for certain scenarios like custom input methods, low-level audio pipeline control, and complex camera APIs.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">When you hit an undocumented edge case on Android, resolution typically takes hours. On HarmonyOS NEXT, the same problem can take days or require direct contact with Huawei developer support.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">On a 4-month project, budget 2 to 4 weeks of absorbed effort for documentation gaps and slow support resolution cycles. This is not padding. It is the realistic cost of working on a maturing platform.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Youll_Waste_Time_On_Hidden_Costs\"><\/span><b>What You&#8217;ll Waste Time On (Hidden Costs)<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"alignnone wp-image-13553 size-full\" src=\"https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-11.webp\" alt=\"what you wll waste time on while migrating android to harnmonyos\" width=\"1200\" height=\"630\" srcset=\"https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-11.webp 1200w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-11-300x158.webp 300w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-11-1024x538.webp 1024w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Feature-complexity-11-768x403.webp 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Every <\/span><b>HarmonyOS migration<\/b><span style=\"font-weight: 400;\"> project goes through most of these. Plan for them ahead of time, or else you can discover them later or during the project.\u00a0<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Testing_Matrix_Explosion\"><\/span><b>Testing Matrix Explosion<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">HarmonyOS NEXT runs across a wide range of devices. These include phones, tablets, wearables, smart screens, vehicle infotainment systems, and IoT devices. Device memory ranges from 128KB on low-end IoT hardware to 4GB on flagship phones.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This device diversification creates some real testing complexity:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">UI rendering and layout behaviour significantly differ<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Performance benchmarks vary significantly between different stages of a device\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Background service handling, push notifications, and sensor APIs behave differently on different wearables, phones, and vehicles<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Keep a budget of 20 to 30% additional time for device matrix testing, a significant step beyond the core development estimate. Android\u2019s device fragmentation experience does not fully prepare teams for the range of HarmonyOS NEXT hardware categories.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A practical approach: define a primary device tier for QA (flagship phone, mid-range phone, tablet), then run exploratory testing on different wearable and smart screen target apps.\u00a0<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Feature_Gaps_and_Workarounds\"><\/span><b>Feature Gaps and Workarounds<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">As of August 2025, HarmonyOS 5.1.0 has some measurable gaps in conveying the best app experience compared to Android and iOS. Furthermore, popular apps, including Meituan and Bilibili, continue to lack some features even after months of their HarmonyOS NEXT launches. Some are less common and enterprise-built, but they still experience crashes and freezes.<\/span><\/p>\n<p><b>What this means for scoping:<\/b><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">You cannot fully scope a migration until coding begins<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Some features require some additional work, and some need to be postponed to Phase 2<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Committing to feature-complete equality at launch will produce either missed deadlines or even some unstable releases<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Run a 2-week discovery sprint before locking timelines. Any estimate developed without one is a rough order, not a final commitment-ready number.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Library_and_SDK_Gaps\"><\/span><b>Library and SDK Gaps<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Many Android libraries have no maintained HarmonyOS NEXT equivalent. When you encounter a missing library, the options are:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Fork it and port to ArkTS<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Build a native wrapper against the HarmonyOS API<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Remove the feature that relied on it<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Forking is viable for small utility libraries. It becomes expensive quickly for any library with a significant surface area.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A dependency audit before migration starts costs 2 to 4 weeks. Discovering a blocking library dependency 2 weeks before a planned delivery costs significantly more than that.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_Migration_Paths_Pick_Your_Approach\"><\/span><b>The Migration Paths (Pick Your Approach)<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">There is no single right path. Hence, the best approach always depends on your app&#8217;s architecture, codebase age, and how tightly you are planning to make it based on Android-specific patterns.<\/span><\/p>\n\n<div class=\"wpdt-c row wpDataTableContainerSimpleTable wpDataTables wpDataTablesWrapper\n\"\n    >\n        <table id=\"wpdtSimpleTable-716\"\n           style=\"border-collapse:collapse;\n                   border-spacing:0px;\"\n           class=\"wpdtSimpleTable wpDataTable\"\n           data-column=\"4\"\n           data-rows=\"4\"\n           data-wpID=\"716\"\n           data-responsive=\"0\"\n           data-has-header=\"0\">\n\n                    <tbody>        <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"A1\"\n                    data-col-index=\"0\"\n                    data-row-index=\"0\"\n                    style=\" width:25%;                    padding:10px;\n                    \"\n                    >\n                                        Approach                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"B1\"\n                    data-col-index=\"1\"\n                    data-row-index=\"0\"\n                    style=\" width:25%;                    padding:10px;\n                    \"\n                    >\n                                        Relative Effort                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"C1\"\n                    data-col-index=\"2\"\n                    data-row-index=\"0\"\n                    style=\" width:25%;                    padding:10px;\n                    \"\n                    >\n                                        When to Use                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"D1\"\n                    data-col-index=\"3\"\n                    data-row-index=\"0\"\n                    style=\" width:25%;                    padding:10px;\n                    \"\n                    >\n                                        Key Tradeoff                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A2\"\n                    data-col-index=\"0\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Ground-up rewrite in ArkTS                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B2\"\n                    data-col-index=\"1\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        100%                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C2\"\n                    data-col-index=\"2\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        App is under 5 years old with a clean, modular architecture                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"D2\"\n                    data-col-index=\"3\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Slowest overall, but no inherited technical debt                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A3\"\n                    data-col-index=\"0\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        A2H Converter + manual service migration                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B3\"\n                    data-col-index=\"1\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        60 to 70%                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C3\"\n                    data-col-index=\"2\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Medium-complexity app with standard Android View patterns                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"D3\"\n                    data-col-index=\"3\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Requires manual fixes on approximately 11% of converted UI                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A4\"\n                    data-col-index=\"0\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Mini program or web app conversion                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B4\"\n                    data-col-index=\"1\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        40 to 50%                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"C4\"\n                    data-col-index=\"2\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        App already in mini program or web app format                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"D4\"\n                    data-col-index=\"3\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Only works for specific lightweight architectures                    <\/td>\n                                        <\/tr>\n                    <\/table>\n<\/div><style id='wpdt-custom-style-716'>\n.wpdt-tc-FFFFFF { color: #FFFFFF !important;}\n.wpdt-bc-2196F3 { background-color: #2196F3 !important;}\n<\/style>\n\n<h3><span class=\"ez-toc-section\" id=\"Path_1_Ground-Up_Rewrite\"><\/span><b>Path 1: Ground-Up Rewrite<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">This sounds like the most expensive option by the numbers. For some apps, it produces the cleanest result.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If your Android app&#8217;s architecture revolves around the Android lifecycle, is heavily dependent on Java patterns, or is built around Google service integrations, starting fresh in ArkTS would be a good choice. This step might help to avoid carrying those constraints into a new platform.<\/span><\/p>\n<p><b>This Approach Is Recommended when:<\/b><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">The app is 5 or more years old with a limited modular architecture<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Business logic is deeply entangled with Android-specific APIs<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Google service dependencies run through the core application code<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Path_2_A2H_Converter_Plus_Manual_Service_Migration\"><\/span><b>Path 2: A2H Converter Plus Manual Service Migration<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">This is the most common path for <\/span><b>how to develop an app for HarmonyOS<\/b><span style=\"font-weight: 400;\"> from an existing Android codebase today.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The A2H Converter handles the mechanical UI conversion work. Experienced <\/span><b>HarmonyOS NEXT developers<\/b><span style=\"font-weight: 400;\"> address the 11% manual fallout and handle the full service layer migration independently.<\/span><\/p>\n<p><b>This Approach Is Recommended when:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">App has a layered and modular architecture<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">UI components follow some significant and standard Android View patterns without any heavy customisation<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The team is building ArkTS expertise with seamless migration<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Path_3_Mini_Program_or_Web_App_Conversion\"><\/span><b>Path 3: Mini Program or Web App Conversion<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Huawei provides conversion utilities for WeChat mini programs and certain web app architectures. If meaningful functionality already exists in mini program format, this path offers the fastest and safest route to HarmonyOS NEXT availability.<\/span><\/p>\n<p><b>This Approach Is Recommended when:<\/b><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">App already has a mini program version<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Core functionality is achievable in a lightweight or web-based format<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Speed to market matters more than native feature depth<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Timeline_For_Your_Specific_App_Type\"><\/span><b>Timeline For Your Specific App Type<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Below is a clear timeline that might guide you on the specific app type, allowing you to make the right choice.\u00a0<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"For_a_fitness_app_medium_complexity\"><\/span><b>For a fitness app (medium complexity):<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<div class=\"wpdt-c row wpDataTableContainerSimpleTable wpDataTables wpDataTablesWrapper\n\"\n    >\n        <table id=\"wpdtSimpleTable-715\"\n           style=\"border-collapse:collapse;\n                   border-spacing:0px;\"\n           class=\"wpdtSimpleTable wpDataTable\"\n           data-column=\"2\"\n           data-rows=\"7\"\n           data-wpID=\"715\"\n           data-responsive=\"0\"\n           data-has-header=\"0\">\n\n                    <tbody>        <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"A1\"\n                    data-col-index=\"0\"\n                    data-row-index=\"0\"\n                    style=\" width:50%;                    padding:10px;\n                    \"\n                    >\n                                        Phase\u00a0                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"B1\"\n                    data-col-index=\"1\"\n                    data-row-index=\"0\"\n                    style=\" width:50%;                    padding:10px;\n                    \"\n                    >\n                                        Duration                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A2\"\n                    data-col-index=\"0\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Dependency audit and environment setup                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B2\"\n                    data-col-index=\"1\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        2 weeks                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A3\"\n                    data-col-index=\"0\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        UI conversion using A2H Converter and manual fixes                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B3\"\n                    data-col-index=\"1\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        3 weeks                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A4\"\n                    data-col-index=\"0\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Service migration (location APIs, health data, HMS Pay)                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B4\"\n                    data-col-index=\"1\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        4 weeks                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A5\"\n                    data-col-index=\"0\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Device testing across phone, tablet, and wearable                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B5\"\n                    data-col-index=\"1\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        3 weeks                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A6\"\n                    data-col-index=\"0\"\n                    data-row-index=\"5\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Bug fixes, performance tuning, AppGallery submission                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B6\"\n                    data-col-index=\"1\"\n                    data-row-index=\"5\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        2 to 3 weeks                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A7\"\n                    data-col-index=\"0\"\n                    data-row-index=\"6\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Total                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B7\"\n                    data-col-index=\"1\"\n                    data-row-index=\"6\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        14 to 15 weeks (approximately 3.5 months)                    <\/td>\n                                        <\/tr>\n                    <\/table>\n<\/div><style id='wpdt-custom-style-715'>\n.wpdt-tc-FFFFFF { color: #FFFFFF !important;}\n.wpdt-bc-2196F3 { background-color: #2196F3 !important;}\n<\/style>\n\n<h3><span class=\"ez-toc-section\" id=\"For_a_fintech_app_high_complexity\"><\/span><b>For a fintech app (high complexity):<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<div class=\"wpdt-c row wpDataTableContainerSimpleTable wpDataTables wpDataTablesWrapper\n\"\n    >\n        <table id=\"wpdtSimpleTable-714\"\n           style=\"border-collapse:collapse;\n                   border-spacing:0px;\"\n           class=\"wpdtSimpleTable wpDataTable\"\n           data-column=\"2\"\n           data-rows=\"6\"\n           data-wpID=\"714\"\n           data-responsive=\"0\"\n           data-has-header=\"0\">\n\n                    <tbody>        <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"A1\"\n                    data-col-index=\"0\"\n                    data-row-index=\"0\"\n                    style=\" width:50%;                    padding:10px;\n                    \"\n                    >\n                                        Phase\u00a0                    <\/td>\n                                                <td class=\"wpdt-cell wpdt-bold wpdt-tc-FFFFFF wpdt-bc-2196F3\"\n                                            data-cell-id=\"B1\"\n                    data-col-index=\"1\"\n                    data-row-index=\"0\"\n                    style=\" width:50%;                    padding:10px;\n                    \"\n                    >\n                                        Duration\u00a0                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A2\"\n                    data-col-index=\"0\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        All phases from the fitness app baseline                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B2\"\n                    data-col-index=\"1\"\n                    data-row-index=\"1\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        14 to 15 weeks                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A3\"\n                    data-col-index=\"0\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Security audit and penetration testing                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B3\"\n                    data-col-index=\"1\"\n                    data-row-index=\"2\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        3 Weeks\u00a0                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A4\"\n                    data-col-index=\"0\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Banking API and local payment gateway integration                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B4\"\n                    data-col-index=\"1\"\n                    data-row-index=\"3\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        3 Weeks\u00a0                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A5\"\n                    data-col-index=\"0\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        China data residency compliance testing and documentation                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B5\"\n                    data-col-index=\"1\"\n                    data-row-index=\"4\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        2 Weeks\u00a0                    <\/td>\n                                        <\/tr>\n                            <tr class=\"wpdt-cell-row \" >\n                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"A6\"\n                    data-col-index=\"0\"\n                    data-row-index=\"5\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        Total\u00a0                    <\/td>\n                                                <td class=\"wpdt-cell \"\n                                            data-cell-id=\"B6\"\n                    data-col-index=\"1\"\n                    data-row-index=\"5\"\n                    style=\"                    padding:10px;\n                    \"\n                    >\n                                        22 or more weeks (5+ months minimum)                    <\/td>\n                                        <\/tr>\n                    <\/table>\n<\/div><style id='wpdt-custom-style-714'>\n.wpdt-tc-FFFFFF { color: #FFFFFF !important;}\n.wpdt-bc-2196F3 { background-color: #2196F3 !important;}\n<\/style>\n\n<p><span style=\"font-weight: 400;\">Apps with multi-jurisdictional regulatory requirements or complex backend infrastructure should plan for 7 to 8 months minimum.<\/span><\/p>\n<p><b>Get a Free HarmonyOS Migration Assessment<\/b><\/p>\n<p><span style=\"font-weight: 400;\">If you want a number you can actually build a business case around, the only reliable path is a codebase review first.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">As you are looking for proper and detailed insights on <\/span><b>how to migrate an Android app to HarmonyOS<\/b><span style=\"font-weight: 400;\">, a seamless assessment looks at your Android project&#8217;s screen count, component complexity, third-party dependency list, and service architecture. From that, you get an effort range with a confidence level attached, not a single number that breaks on first contact with the actual codebase.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Get a free <\/span><b>HarmonyOS migration assessment.<\/b><span style=\"font-weight: 400;\"> We review your Android codebase and give you an accurate estimate you can use.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_GMTA_Can_help_You_Migrate_an_Android_app_to_HarmonyOS\"><\/span><b>How GMTA Can help You Migrate an Android app to HarmonyOS?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">GMTA works on <\/span><b>HarmonyOS app development<\/b><span style=\"font-weight: 400;\"> and migration projects across different sectors such as fitness, e-commerce, logistics, and fintech verticals.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Our migration process starts with the dependency audit and UI complexity assessment. From there, we build the phase plan, assign the right team size for the target timeline, and handle the full technical stack. These include &#8211;<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">ArkUI rebuild<\/span><\/li>\n<li><span style=\"font-weight: 400;\">HMS service integration<\/span><\/li>\n<li><span style=\"font-weight: 400;\">DevEco Studio configuration<\/span><\/li>\n<li><span style=\"font-weight: 400;\">AppGallery submission<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">For teams that have already started and hit blockers, our remediation work targets specific problems, such as missing SDK workarounds, test matrix coverage gaps, or ArkTS performance issues that actually emerged after initial development.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you want to <\/span><a href=\"https:\/\/www.gmtasoftware.com\/contact-us\"><b>migrate Android to HarmonyOS<\/b><\/a><span style=\"font-weight: 400;\">, we do not produce single-point estimates that collapse under scrutiny. Every engagement we start requires a properly scoped assessment, so both sides know what they are actually going to get.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ready to start? Reach out to GMTA Software for a free codebase review and migration assessment.<\/span><\/p>\n<p><a href=\"https:\/\/www.gmtasoftware.com\/contact-us\"><img decoding=\"async\" class=\"alignnone size-full wp-image-13554\" src=\"https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Ready-to-Launch-Your-App-on-HarmonyOS-NEXT_.webp\" alt=\"Migrate your android app to harmonyos with industry experts \" width=\"1050\" height=\"300\" srcset=\"https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Ready-to-Launch-Your-App-on-HarmonyOS-NEXT_.webp 1050w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Ready-to-Launch-Your-App-on-HarmonyOS-NEXT_-300x86.webp 300w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Ready-to-Launch-Your-App-on-HarmonyOS-NEXT_-1024x293.webp 1024w, https:\/\/www.gmtasoftware.com\/blog\/wp-content\/uploads\/2026\/05\/Ready-to-Launch-Your-App-on-HarmonyOS-NEXT_-768x219.webp 768w\" sizes=\"(max-width: 1050px) 100vw, 1050px\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQs\"><\/span><b>FAQs\u00a0<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><b>Can I reuse my existing Kotlin or Java code on HarmonyOS NEXT?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">No. HarmonyOS NEXT uses ArkTS as its primary language. Application-layer Kotlin and Java cannot be executed directly. In limited cases, C++ native code can be wrapped using HarmonyOS NEXT\u2019s NDK, but all application logic must be rewritten in ArkTS.<\/span><\/p>\n<p><b>Is HarmonyOS just Android with a different name?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">No. HarmonyOS versions 1 through 4 ran on an Android compatibility layer. HarmonyOS NEXT (versions 5 and 6) is a clean-slate OS with its own kernel, runtime, and development stack. There is no Android runtime and no support for APKs.<\/span><\/p>\n<p><b>What is the actual difference between ArkUI and Android XML layouts?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Android XML is imperative. You define a view hierarchy and manually push state updates to individual views. ArkUI is declarative; the framework handles rendering based on state. When you check the <\/span><b>ArkUI vs Android XML layout, <\/b><span style=\"font-weight: 400;\">you will learn this is a full paradigm shift, comparable to moving from traditional View-based Android development to Jetpack Compose.<\/span><\/p>\n<p><b>How long does AppGallery review take after submission?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">1 to 2 weeks. Build this into your project schedule before committing to a launch date. Plan this into your overall project schedule, particularly if you have made some special launch-date commitments with your clients.\u00a0<\/span><\/p>\n<p><b>Do I need a Chinese business entity to publish on AppGallery?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Not for general consumer apps. International developers can publish through AppGallery Connect with a standard Huawei developer account. Regulated categories such as finance, <a title=\"healthcare software development company\" href=\"https:\/\/www.gmtasoftware.com\/healthcare-software-development-services\"><strong>healthcare<\/strong><\/a>, and <a title=\"education app development services\" href=\"https:\/\/www.gmtasoftware.com\/education-app-development\"><strong>education<\/strong><\/a> may require a local entity to comply with Chinese regulatory requirements.<\/span><\/p>\n<p><b>What is the minimum realistic timeline for any HarmonyOS migration?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">12 weeks for a simple, well-architected app with one experienced HarmonyOS NEXT developer. This covers setup, development, testing, and AppGallery review. Compressing below this consistently produces technical debt that surfaces in the first maintenance release.<\/span><\/p>\n<p><b>How is HarmonyOS app development different from Android development day to day?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Four core differences: the language (ArkTS vs Kotlin\/Java), the UI system (declarative ArkUI vs imperative XML), the service layer (HMS vs GMS), and the toolchain (DevEco Studio vs Android Studio). Component lifecycle, state handling, and build configuration all work differently despite serving the same purpose.<\/span><\/p>\n<p><b>Is HarmonyOS worth migrating to from a business perspective?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">For China-focused apps, yes. The <\/span><b>Android to HarmonyOS migration cost<\/b><span style=\"font-weight: 400;\"> varies. HarmonyOS holds 18% market share in mainland China in 2025, ahead of iOS at 15%. AppGallery had 300,000 native apps by November 2025, and Huawei plans international expansion in 2026. The decision depends on whether your target market justifies the investment in migration.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quick Summary HarmonyOS migration is not just a simple port. It is effectively a second app development. ArkTS (TypeScript-based, HarmonyOS-specific) is the primary language. UI rewrite accounts for 35 to 45 per cent of total effort. Service migration from Google Mobile Services to Huawei Mobile Services (HMS) adds another 30 to 40 per cent A [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":13556,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3,1556],"tags":[],"class_list":["post-13549","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-app-development","category-harmonyos"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/posts\/13549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/comments?post=13549"}],"version-history":[{"count":8,"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/posts\/13549\/revisions"}],"predecessor-version":[{"id":14577,"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/posts\/13549\/revisions\/14577"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/media\/13556"}],"wp:attachment":[{"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/media?parent=13549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/categories?post=13549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gmtasoftware.com\/blog\/wp-json\/wp\/v2\/tags?post=13549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}