Flutter App Development Services

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

Recent outcomes

Voice AI · Research

6× deeper insights

Text-based interviews converted to automated phone calls

AI Automation · Ops

20k+ txns day one

Manual invoice OCR across 40+ gas stations

Loyalty · Retail

1,062 users in 4 weeks

SuperValu & Centra loyalty platform with receipt validation

SaaS · Logistics

2,000+ shipments yr 1

Multi-carrier shipping hub for Indonesian eCommerce

4.9
on Clutch
See our work

The problem

Sound familiar?

  • 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?

Short answer

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.

Key takeaways

  • One Flutter codebase covers iOS, Android, web, and desktop from a single development stream.
  • App Store and Google Play submission are handled end-to-end, including signing, metadata, and review responses.
  • Flutter draws its own UI through its graphics engine (Impeller, which replaced Skia), so results are pixel-identical on both platforms regardless of OS version.
  • Platform channels let Dart call native Swift and Kotlin, so camera, Bluetooth, biometrics, and NFC stay available.
  • A focused first version usually starts around $20,000 to $50,000; a multi-role product grows to $50,000 to $130,000 as scope expands. Fixed cost agreed before development starts.
  • Most builds launch a validated v1 in roughly 12 to 16 weeks, then grow through an ongoing release cycle.

Trusted by

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

Flutter takes a different path from most cross-platform toolkits. Instead of wrapping the native iOS and Android UI components, it ships its own rendering engine and draws every pixel itself. Everything on screen is a widget, composed into a tree that Flutter paints directly through its graphics engine. That is why one Flutter codebase looks and behaves the same on both platforms, without the design compromises that come from abstracting over two different UI systems. The same Dart code that ships your mobile app can also target web and desktop if your roadmap needs it.

46%
of cross-platform developers use Flutter
Statista Developer Survey, 2024
Most-used
cross-platform mobile framework
JetBrains State of Developer Ecosystem, 2023

That adoption is not academic. A larger community means more packages on pub.dev, more battle-tested tooling, and more engineers who can pick up your codebase later.

Dart compiles ahead of time to native ARM code, so there is no JavaScript bridge between your logic and the screen. That is why Flutter holds up in the cases that expose thinner cross-platform stacks: heavy animation, custom graphics, and screens that redraw constantly. When you need the actual device, camera, Bluetooth, biometrics, or NFC, platform channels let Dart call straight into Swift or Kotlin, so nothing about the hardware is off limits.

State management is a per-project decision, not a house default. We reach for Riverpod or Bloc based on how much shared state the app carries and how the team wants to test it. When a simpler pattern would cause less ongoing friction than a heavier one, we say so.

For businesses that need both mobile platforms, want a custom branded UI rather than a platform-default look, and anticipate reaching more than one surface over time, Flutter is a strong starting point. We built Bella Skin Institute's medical-spa loyalty app on a single Flutter codebase running on iOS and Android, with QR checkout that clears in under 15 seconds at the front desk.

Flutter is not always the answer. If your app leans on the newest platform-native UI the day iOS or Android ships it, or a large existing team already lives in Swift and Kotlin, native can be the better call. We flag that during scoping, not after.

Capabilities

What we build

  • 01
    Cross-platform Flutter apps

    iOS and Android apps from a single Flutter codebase: consumer products, marketplaces, service booking tools, and feature-rich mobile products that need both platforms without two native codebases. State management is chosen per project, in-app purchases and subscriptions run through one SDK across both stores, and App Store and Google Play submissions are handled end to end.

    Built with
    Flutter · Riverpod or Bloc · RevenueCat · Firebase Cloud Messaging
  • 02
    Flutter for enterprise tools

    Internal enterprise apps for field workers and operational staff on mixed iOS and Android device fleets, from one Flutter codebase. Offline storage with background sync pushes queued changes when connectivity returns, barcode scanning, document capture, certificate pinning, and biometric login cover common field-tool needs, and apps deploy via MDM to bypass public store review.

    Built with
    Flutter · Drift · SQLite · Jamf, Intune, Android Enterprise
  • 03
    Flutter web applications

    Flutter's web target lets the Dart codebase behind your mobile app also run in a browser, useful for a companion web interface without building a separate frontend. Two renderers trade pixel-identical output against a lighter initial download, and because Flutter web renders to a canvas that search crawlers cannot index, we assess whether Flutter web or Next.js/React is right for your web surface.

    Built with
    Flutter web · CanvasKit · HTML renderer
  • 04
    Flutter with Firebase backend

    Flutter and Firebase work well together: Firestore for real-time data, Firebase Auth for sign-in without building an auth server, Cloud Functions for server-side logic, and Cloud Messaging for push, plus feature flags and production health monitoring. The combination handles most MVP and mid-complexity products, and where your product outgrows Firebase we scope a Node.js API alongside the Flutter app.

    Built with
    FlutterFire · Firestore · Firebase Auth · Cloud Functions · Remote Config
  • 05
    Migration from React Native to Flutter

    Migration of existing React Native apps to Flutter, when performance has outgrown the JavaScript bridge or consolidating on one cross-platform stack is operationally simpler. Dart-to-native compilation removes the async bridge boundary, and we implement screen by screen in a parallel repo while the React Native app stays in production, with automated UI comparison tests before cutover.

    Built with
    Flutter · Dart · Shorebird
  • 06
    Flutter app maintenance and updates

    Ongoing Flutter development after launch: new features, SDK upgrades, OS compatibility updates, and the bugs that surface across a heterogeneous device population. We drive jank and crash prioritisation from production data, audit and upgrade dependencies on a release cadence, profile on mid-range Android hardware, and run CI/CD that builds, signs, and submits to TestFlight and Google Play on each merged PR.

    Built with
    Flutter DevTools · Firebase Crashlytics · Codemagic or Bitrise

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

What clients say

What our clients say

Three-year average engagement. Founders and operators describing the work in their own words. No marketing varnish.

Charles E.
Charles E.
USA flagUSA
Entrepreneur at Aggie Technologies

All of the sprints were completed on schedule and on budget. We highly recommend RaftLabs!

See all projects

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Frequently asked questions

Flutter is the better choice when pixel-perfect UI consistency across iOS and Android is a priority, Flutter draws its own UI through its own graphics engine rather than the platform's widgets, 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 first version, one clear use case, clean custom UI, and standard integrations, usually starts around $20,000 to $50,000. As the product grows into multiple user roles, custom animation, native capability work, and its own backend, it moves into the $50,000 to $130,000 range. One Flutter codebase still costs less than two separate native builds. We scope every project and agree a fixed cost before development starts.

Work with us

Tell us what you need. We'll tell you what it would take.

We scope Flutter App Development in 30 minutes. You walk away with a clear cost, timeline, and approach. No commitment required.

  • Scope and cost agreed before work starts. No surprises. No obligation.
  • Working prototype within 3 weeks of kickoff.
  • Pay by milestone. You see progress before each invoice.
  • 60-day post-launch warranty. Bug fixes, UI tweaks, and deployment support. No retainer.
  • All conversations are NDA-protected.