Flutter Migration Services
Our expert Flutter migration services cover the full cycle, from initial codebase audit to final deployment, with zero data loss and no disruption to your live app. Whether you're on React Native, iOS Native, Android, Xamarin, or Ionic, we migrate your app to Flutter and deliver a cross-platform product that's faster, leaner, and built to scale.
80+ Flutter Developers
Fully Signed NDA
50+ Flutter Migration Completed
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Why Migrate Your App to Flutter?
Migrate your existing app to Flutter to improve your application's performance, scalability, and long-term maintainability. Our Flutter migration services handle the complete transition with optimized architecture and a clean, unified codebase. Below are the reasons why you should consider migrating your app to Flutter.
One Codebase, Four Platforms
Our migration delivers a single Flutter codebase that runs across iOS, Android, Web, and Desktop. Your team stops maintaining separate builds and starts shipping to every platform at once.
Near-Native Performance on All Devices
The migration moves your app to Flutter's Impeller rendering engine, delivering smooth, responsive performance on both new and older devices. Your users get the same fast experience regardless of their hardware.
Reduced Development and Maintenance Costs
Businesses that migrate to Flutter through us consolidate from two codebases to one. That directly reduces the developer hours needed for every update, bug fix, and feature release.
Faster Delivery Across Every Platform
Flutter's hot reload accelerates your development cycle, letting your team test and ship changes in real time without full rebuilds. Feature updates that previously required separate platform sprints now go live simultaneously.
Consistent UI Across Every Device
Our migration rebuilds your interface using Flutter's widget library, giving you pixel-perfect consistency on every screen. No more platform-specific UI discrepancies or design drift.
Long-Term Support Backed by Google
Flutter is actively maintained by Google with a regular release cycle and a large developer ecosystem. Migrating now means your codebase stays current without costly rewrites down the line.
Our Flutter Migration Services
Hire Flutter developers from us to handle your complete migration to Flutter with optimised architecture and a clean, production-ready codebase. Our Flutter migration services cover every layer of the transition, from the initial audit to post-launch support, so your live product stays active throughout.
Full App Migration to Flutter
Our team rewrites your entire codebase in Dart, preserving all business logic, app workflows, navigation structure, and data architecture. We handle state management re-architecture, platform channel reconfiguration, and plugin replacement to ensure your migrated app performs exactly as intended on Flutter.
Flutter Upgrade Services
If your existing Flutter app is running on an older version, when you choose our Flutter Upgrade Services, our team migrates the codebase to the latest stable release and resolves all deprecated APIs for full compatibility with the current Flutter SDK. Your app stays supported, secure, and aligned with the latest platform capabilities without a full rewrite.
Data and Storage Migration
We migrate all app data, local storage structures, and database schemas to Flutter-compatible architecture using Hive, SQLite, or Firebase depending on your stack. Every data layer is validated at each stage of the migration and no build is approved until integrity is confirmed across all target platforms.
API Integration and Backend Connectivity
Our team rewires every third-party API, payment gateway, push notification service, and backend connection within the new Flutter architecture. We validate all integrations against your existing backend contracts so no functionality is dropped or broken during the transition.
Flutter Migration Consulting
Our consultants assess your existing app's architecture, identify transition risks, and define a clear migration strategy aligned with your business goals. Our Flutter consulting experts deliver a structured roadmap covering scope, timeline, platform priorities, and effort estimates so you enter the engagement with complete visibility.
Post-Migration Support and Maintenance
Our team stays on after your migrated app goes live to handle bug fixes, performance monitoring, and compatibility updates across iOS, Android, Web, and Desktop. We ensure your Flutter app remains stable, secure, and up to date well beyond the launch date.
Platforms We Migrate From
Your current tech stack doesn't have to limit your next move. We handle flutter migration from every major platform, so you can move forward without rebuilding from zero.
React Native to Flutter
The most requested flutter migration path. From JavaScript to Dart, with better rendering performance and native UI fidelity without the bridge overhead.
iOS Native / Swift to Flutter
Expand your iOS app to Android, Web, and Desktop without rebuilding from scratch. All existing features, data, and integrations are preserved through the migration.
Kotlin to Flutter
Convert your Android app into a fully cross-platform Flutter product that runs on iOS, Android, Web, and Desktop with a single codebase.
Xamarin to Flutter
With Microsoft ending Xamarin support in May 2024, flutter migration is the cleanest path forward. We handle the full transition including plugin replacement and architecture updates.
Ionic to Flutter
Move from WebView-based hybrid apps to natively compiled Flutter for a genuine performance upgrade and a consistent native-quality UI across platforms.
FlutterFlow to Flutter
Gain full-code control and advanced customization beyond what FlutterFlow's visual builder allows. We migrate your FlutterFlow app to production-grade Flutter code.
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Your Success Is Guaranteed
We accelerate the release of digital products and guarantee your success
We Use Slack, Jira & GitHub for Accurate Deployment and Effective Communication.
Our Flutter App Migration Process: 6 Structured Steps
We follow a structured, milestone-driven process on every Flutter migration project. Here's exactly how it works, from the first conversation to post-launch support.
Discovery and Requirement Gathering
We start by understanding your business goals, your app's current architecture, and what you need from Flutter post-migration. This shapes the entire project plan.
App Audit and Feasibility Assessment
Our team conducts a thorough audit of your codebase, third-party dependencies, API layers, and UI complexity. You get a clear, honest picture of what the migration involves before a single line is rewritten.
Migration Strategy and Roadmap
We build a detailed migration plan covering timeline, milestones, platform priorities, and risk areas. You know exactly what to expect at every stage.
Code Migration and UI Rebuild
Business logic is rewritten in Dart, the UI is rebuilt using Flutter's widget library, and all integrations are re-wired and tested in structured stages. Progress is tracked against milestones and shared with your team throughout.
QA and Cross-Platform Testing
We run functional, performance, and regression tests across iOS, Android, Web, and Desktop. Every feature is verified before the build is approved for release.
Deployment and Post-Migration Support
Your migrated app goes live with minimal downtime. Our team stays on for post-launch monitoring, bug fixes, and ongoing support so the transition is complete, not just deployed.
Flutter Migration Success Stories
Real projects. Real outcomes. Here's what our Flutter migration services have delivered for clients across industries.
Faster Releases and a Unified Codebase for an eCommerce App
Industry: eCommerce
Core Technology: Flutter | Firebase | Stripe API
A fast-growing eCommerce brand was managing two separate React Native codebases for iOS and Android. Every product update required parallel work across both platforms, doubling effort and pushing release cycles back by weeks. Our team migrated the full app to Flutter, rebuilt the UI using Material Design 3, and consolidated both codebases into one. Firebase was integrated for real-time inventory sync and Stripe was re-connected cleanly within the new Flutter architecture. Post-migration, the client's team reduced feature release time by 35% and cut ongoing maintenance costs by 40%.
REQUEST FOR QUOTATION
iOS App Expanded to Android in 10 Weeks for a Healthcare Startup
Industry: Healthcare
Core Technology: Flutter | REST APIs | Firebase
A healthcare startup had a fully functional iOS app but no Android presence, limiting their market reach. Rebuilding from scratch was not an option given timeline and budget constraints. Our team migrated the iOS Native (Swift) codebase to Flutter, preserving HIPAA-compliant data handling, appointment scheduling, and patient record features throughout the entire process. The UI was rebuilt for cross-platform consistency and the Android version was deployed alongside the existing iOS app. The client launched on Android in 10 weeks with zero data loss and a 60% increase in total app reach.
REQUEST FOR QUOTATION
Technical Debt Cleared and Product Roadmap Unblocked for an Enterprise SaaS Platform
Industry: Enterprise Software
Core Technology: Flutter | PostgreSQL | REST APIs
A SaaS company running a Xamarin app was accumulating technical debt faster than they could ship features. Deprecated plugins and Xamarin's end-of-life timeline were putting their product roadmap at serious risk. Our team completed the full migration to Flutter, replaced every deprecated plugin with Flutter-native equivalents, and restructured the app's architecture to support the client's growing feature set. The migration was completed with zero downtime throughout. Within 60 days of going live, the client shipped three major product features that had been blocked for months.
REQUEST FOR QUOTATION
Technology Stack We Use for Flutter Migration
Our flutter migration team works with a proven, production-ready stack across every layer of the application.
| Languages and Frameworks | Flutter SDKDartSwift (source migration)Kotlin / Java (source migration)JavaScript / TypeScript (React Native source) |
| Backend and Databases | FirebaseREST APIsGraphQLSQLiteHivePostgreSQL |
| DevOps and Tools | GitHub / GitLabCI/CD: Fastlane, BitriseJira, Trello, AsanaPostmanFlutter DevTools |
| Testing | Flutter TestIntegration TestPatrol (UI Testing)Firebase Test Lab |
| State Management | BlocProviderRiverpodGetXMobX |
| UI and Design | Material Design 3Cupertino WidgetsCustom Widget LibraryFigma |
| Third-Party Integrations | StripeGoogle Maps SDKFirebase AuthPush Notifications (FCM)Analytics |
| Cloud Platforms | AWSGoogle Cloud PlatformMicrosoft AzureFirebase Hosting |
Why Should You Choose Bacancy for Flutter App Migration?
When you choose Bacancy as your flutter migration partner, you collaborate with engineers who have delivered cross-platform applications across eCommerce, Healthcare, FinTech, and Enterprise SaaS. Our Flutter team has a strong command of Dart, REST APIs, Firebase, GraphQL, and secure third-party integrations. As a trusted flutter app development company in the USA, we bring transparent processes and milestone-based delivery.
Benefits of Choosing Bacancy for Flutter App Migration:
- 80+ dedicated Flutter developers ready for your migration project
- 14+ years of tech industry experience across 35+ Flutter apps delivered
- Zero-downtime migration approach, your live app stays active throughout
- Full IP and NDA protection signed at project inception, not as an afterthought
- Agile, sprint-based delivery with daily updates
- 24x7 post-migration support and monitoring after launch
Frequently Asked Questions
Still have questions? Let's talkNo. Data integrity is a non-negotiable part of our flutter migration process. Before any migration begins, we run a complete audit of your existing data architecture, local storage, and database structures. All data is transferred and validated at every stage, and no build is approved for deployment until full functionality is confirmed across all target platforms.
It depends on your app's complexity. A straightforward app with standard features typically takes 4 to 8 weeks. A complex enterprise app with multiple integrations, custom modules, and large datasets can take 3 to 6 months. After the initial app audit, we give you a specific timeline tied to milestones so there are no surprises.
No. We run the flutter migration in parallel with your live app. Your current version stays available to users throughout the entire process. The migrated version is only switched over once it has passed full QA and your team has reviewed and approved the build.
We handle flutter migration from React Native, iOS Native (Swift), Android Native (Kotlin and Java), Xamarin, Ionic, Cordova, and FlutterFlow. If you're running on a framework not listed here, contact us and we will assess the feasibility before committing to a scope.
Yes. You get 100% ownership of your project. At the inception stage, we sign NDA, copyright, source code, intellectual property, and confidential letter agreements. Your code, your data, and your product remain entirely yours throughout and after the engagement.
Yes, we offer ongoing support and maintenance to keep your app stable, secure, and up-to-date after the migration. Our team handles bug fixes, performance monitoring, and compatibility updates so your Flutter app continues to run smoothly long after launch.
We are a registered entity in the United States with the name Bacancy Technology LLC, so you can choose to pay us in a Bank of America account via ACH or wire transfer. We can also help you save tax with the help of a W9 form. Here is our TIN number 83-4332237. Regardless of your physical location, we accept wire transfers from all across the globe.
Top-Tier IT Geniuses
Bacancy Technology is an exclusive hub of top dedicated software developers, UI/UX designers, QA experts, and product managers with incredibly rare and hidden talents you will ever come across. We let you access the exceptional IT talent globally, from independent software developers to fully managed teams.
Time Zone Aligned
Timezone is never a constraint when you are working with Bacancy Technology. We follow a simple procedure- our developers and your time zone. Hire dedicated software developers from us and collaborate from far away to work according to your time zone, deadline, and milestone.
Experienced Team
Whether you are looking for skilled developers in emerging technologies or looking for an extended arm to augment your existing team, we can lend a helping hand in both situations. We are a full-stack software development company with 1050+ skilled and experienced software developers whom you can hire at your convenience to address ongoing business challenges.