Custom Flutter Apps
New iOS and Android products built in Flutter and Dart, from first scope to App Store and Google Play release.
Flutter App Development, Built to Ship and Scale.
Northforge is a Flutter app development company. Our team of 10 engineers designs, builds and releases Flutter apps for iOS and Android from one Dart codebase, with the architecture, backend and QA a production app needs.
What We Do
Flutter Development Services
Clean Architecture & Bloc
Feature-first Clean Architecture with Bloc or Cubit, repositories and tested business logic, so the app stays changeable after v1.
Flutter for Web
When it helps, the same codebase also targets the web, so an admin or companion app does not need a second team.
Flutter Performance Work
Profiling jank, cutting build sizes and fixing slow start-up on real devices, for apps that already run in production.
Flutter UI Engineering
Pixel-accurate widgets from your Figma files, responsive layouts and the accessibility work stores and users expect.
AI Features in Flutter
Chat assistants, speech scoring and model routing inside the app, wired to your backend rather than bolted on.
Why Flutter
Why We Build Mobile Apps in Flutter
Flutter compiles to native ARM code and draws its own UI, so one codebase gives iOS and Android the same look, the same behaviour and the same release cadence. For most startups that means one team, one backlog and a lower build cost than two separate native apps.
We still say when Flutter is the wrong call. If a product lives on deep platform features, such as advanced background audio or heavy native SDKs, we tell you before you commit. Compare Flutter, React Native and native.
One codebase, two stores
A single Dart codebase ships to the App Store and Google Play, with platform-specific code only where it earns its place.
Senior-led delivery
Every Flutter project has a senior lead who owns architecture, code review and release from start to finish.
Backend included
We build the Firebase, Supabase or FastAPI backend behind the app too, so nothing is lost between two vendors.
Tested on real devices
Unit, widget and integration tests, plus beta builds on real hardware before every store release.
Case study: UpAlerts, a Flutter and Firebase app serving 10,000 daily active users
Case study: JoinBeUs, a Flutter learning app on Clean Architecture with Bloc
Need Answers
Flutter Development FAQ
Flutter lets one team ship iOS and Android apps from a single Dart codebase with native performance. That usually means faster delivery, lower cost and fewer platform bugs than building two native apps.
Yes. We start with a short code audit covering architecture, state management, dependencies and test coverage, then agree on what to fix before adding features.
Bloc or Cubit by default, inside a Clean Architecture with repositories, because it keeps business logic out of widgets and makes it testable. We work with Riverpod or Provider when a codebase already uses them.
Yes. We prepare store listings, signing, review submissions and phased rollouts, and set up crash reporting so a bad build is caught early.
All engagements run through Upwork: a fixed-scope build, a dedicated Flutter team, or a consultation. See how to work with us.