• Need both iOS and Android with a consistent, high-quality UI that doesn't feel like a lowest-common-denominator cross-platform compromise?

  • Evaluating Flutter vs React Native vs native and need a clear breakdown of what each actually means for your timeline, cost, and feature set?

Flutter App Development

Cross-platform iOS and Android apps using Flutter and Dart -- pixel-perfect UI, native performance, and a single codebase that covers both mobile platforms plus web and desktop if your product needs them.
We handle the full Flutter build: architecture, custom UI, backend integration, App Store and Google Play submission, and the ongoing release cycle. You own the code.

  • One codebase for iOS and Android with pixel-perfect UI on both platforms

  • Flutter web and desktop included if the product roadmap requires it

  • App Store and Google Play submission included

  • Fixed cost agreed before development starts

RaftLabs builds cross-platform iOS and Android apps using Flutter and Dart for businesses that need both platforms with pixel-perfect UI consistency and native performance from a single codebase. We handle architecture, custom UI, backend integration, and App Store and Google Play submission. Fixed cost agreed before development starts.

Vodafone
Aldi
Nike
Microsoft
Heineken
Cisco
Calorgas
Energia Rewards
GE
Bank of America
T-Mobile
Valero
Techstars
East Ventures

Flutter's rendering model -- drawing UI directly rather than using platform native widgets -- produces apps that look and perform consistently across iOS and Android without the design compromises that come from abstracting over two different UI systems. The same codebase that ships your mobile product can also target web and desktop if your roadmap requires it.

For businesses that need both mobile platforms, want a custom branded UI rather than a platform-default look, and anticipate that the product will eventually need to reach more than one platform, Flutter is a strong starting point.

What we build

Cross-platform Flutter apps

iOS and Android apps from a single Flutter codebase -- consumer products, marketplace apps, service booking tools, and feature-rich mobile products that need to reach both platform audiences without building and maintaining two separate native codebases. Pixel-perfect custom UI that looks identical on both platforms, push notifications via Firebase Cloud Messaging, in-app purchase integration where required, and App Store and Google Play submissions handled as part of the same delivery engagement.

Flutter for enterprise tools

Internal enterprise apps for field workers and operational staff who use both iOS and Android devices. A single Flutter codebase that covers the full device mix without separate native development streams. Offline-first data architecture with local SQLite storage and background sync, barcode scanning, document capture, and integration with enterprise backend systems. Deployed via MDM, Apple Business Manager, or Google Play for Work rather than public app stores. One codebase, one maintenance stream, for a mixed-device enterprise environment.

Flutter web applications

Flutter's web target lets the same Dart codebase that powers your mobile app also run in a browser -- useful when you need a companion web interface alongside your mobile product without building a separate web frontend. Flutter web performs best for dashboards, internal tools, and admin interfaces where the app-like interaction model is appropriate. We assess whether Flutter web or a standard Next.js/React web application is the right choice for the web portion of your product, based on your performance requirements and user expectations.

Flutter with Firebase backend

Flutter and Firebase work well together -- Firestore for real-time data, Firebase Auth for authentication, Cloud Functions for business logic, Firebase Cloud Messaging for push notifications, and Firebase Analytics for usage tracking. The combination covers most MVP and mid-complexity product requirements without a custom backend build, reducing development cost and time to production. Where your product needs custom business logic, integrations, or data models that exceed Firebase's capabilities, we scope a Node.js backend alongside the Flutter app.

Migration from React Native to Flutter

Migration of existing React Native apps to Flutter -- when performance requirements have outgrown the JavaScript bridge, when custom animation or graphics needs exceed what React Native handles well, or when the team wants to consolidate on a single cross-platform stack. Feature parity assessment, screen-by-screen migration planning, and parallel testing that confirms the Flutter version matches the React Native app's behaviour before the old codebase is retired. The migration that improves performance and UI consistency without losing the cross-platform benefits.

Flutter app maintenance and updates

Ongoing Flutter development after initial launch -- new features, Flutter SDK version upgrades, iOS and Android OS compatibility updates, and the bug fixes that emerge from production usage. Dart and Flutter package version management when dependencies are deprecated or carry security issues. App Store and Play Store target API level updates required by platform policy. Performance profiling for render performance and startup time on mid-range Android devices. The sustained development engagement that keeps a Flutter product current against a fast-moving framework and two platform release cycles.

Have a Flutter project?

Tell us what the app needs to do, which platforms you're targeting, and what the UI requirements look like. We'll scope it and give you a fixed cost.

Talk about your Flutter project

Frequently asked questions

Flutter is the better choice when pixel-perfect UI consistency across iOS and Android is a priority -- Flutter renders its own UI using Skia, so the app looks identical on both platforms regardless of OS version. It also outperforms React Native in complex animation, custom graphics, and scenarios with frequent UI redraws, because Dart compiles to native ARM code rather than running through a JavaScript bridge. Flutter is also the stronger choice when you anticipate needing web or desktop support later, since Flutter's single codebase can target those platforms without the same codebase rewrite that React Native web requires. React Native has the advantage for teams with existing JavaScript expertise and for apps that need to use the latest native platform UI components immediately.

Flutter apps achieve native performance in most categories because Dart compiles to native ARM code. The rendering model is different -- Flutter draws its own UI rather than using platform-native widgets -- which means Flutter apps can look identical on both platforms but don't automatically pick up new platform UI patterns when iOS or Android updates. For apps where matching the platform's native look and feel is important (particularly consumer apps where users have strong iOS or Android UI expectations), native development preserves that alignment. For apps where a custom, branded UI is the goal, Flutter's rendering model is an advantage. We assess which approach fits your use case during scoping.

Yes. Flutter provides platform channels that allow Dart code to call native iOS (Swift/Objective-C) and Android (Kotlin/Java) code directly. The pub.dev package ecosystem covers most common device capabilities -- camera, GPS, biometrics, Bluetooth, NFC, push notifications, and local storage. For capabilities not covered by existing packages, we write custom platform channel code that bridges to native APIs. This approach means Flutter apps can access the full range of device hardware without abandoning the cross-platform codebase. We identify native capability requirements during scoping so there are no surprises mid-build.

A focused Flutter app -- a single use case, clean custom UI, and standard integrations -- typically runs $20,000 to $50,000. A more complex app with multiple user roles, custom animations, significant business logic, native capability integration, and backend development typically runs $50,000 to $130,000. The cross-platform approach costs less than two separate native builds. Fixed cost agreed before development starts. We scope every project before pricing it.