Flutter for Builders
Flutter is the fastest way to ship a polished mobile app when you already know how to build for the web. One codebase, native performance on iOS and Android, a widget system that maps closely to how React developers already think about UI. This course skips the toy examples and gets you building real screens, connecting to Supabase, handling state, and submitting to the App Store — all with production habits from lesson one.
What you'll learn
Course outline
Free — no account needed
Full course — $79 one-time
State Management with Riverpod
The modern Flutter state solution — providers, async data, and reactive UI without boilerplate
Navigation and Routing
Screen navigation, deep links, and the go_router package for app-scale routing
Supabase in Flutter
Auth, database queries, realtime, and storage — connecting your Flutter app to a real backend
Building Real Screens
Forms, validation, image handling, bottom sheets, and the polish that makes apps feel native
Local Storage and Offline Support
SharedPreferences, Isar, and offline-first patterns for apps that work without a connection
Testing Flutter Apps
Unit tests for logic, widget tests for UI, and integration tests for user flows
Shipping to the App Store
App icons, splash screens, environment config, signing, and your first App Store submission
Get the full course
9 lessons — from widgets and state to Supabase integration, platform features, and app store submission.
Written by the RadarTrek editorial team · Reviewed June 2026
About this course
Flutter is Google's cross-platform UI framework for building natively compiled applications for mobile, web, and desktop from a single Dart codebase. Learning Flutter means understanding Dart basics, Flutter's widget tree and composition model, state management patterns, and how to connect to backend APIs and device hardware. This Flutter tutorial for builders covers the skills needed to go from zero to a published mobile app using Flutter and Dart.
Flutter skills are valuable for developers who want maximum control over mobile UI without native code, and teams who want to target iOS and Android simultaneously. After this course you will be able to build Flutter UIs using the widget composition model, manage state with Provider or Riverpod, connect to REST APIs, handle navigation with GoRouter, and build and submit a production Flutter app to both app stores.
Frequently asked questions
Why would I choose Flutter over React Native?
Flutter renders its own UI using its own graphics engine (Skia/Impeller) rather than using native components. This means pixel-perfect consistency across iOS and Android, but also means the UI does not automatically look like a native platform UI. React Native uses native components and looks more native by default. Flutter is often preferred for: complex custom UIs, games and animation-heavy apps, and teams who prioritise cross-platform consistency over platform-native look.
Do I need to learn Dart to use Flutter?
Yes — Flutter uses Dart, not JavaScript. Dart is a strongly-typed language with syntax similar to Java, Kotlin, and modern JavaScript. Developers with JavaScript, Java, or Kotlin backgrounds typically learn enough Dart to be productive within a week. Dart's key concepts — async/await, null safety, generics, and classes — will feel familiar.
What is the Flutter widget model?
In Flutter, everything is a widget. Widgets are immutable descriptions of part of the UI — when state changes, Flutter rebuilds the affected widget tree. You compose UIs by nesting widgets: a Scaffold contains an AppBar and a body, the body might be a Column containing Text and Button widgets. Understanding the composition model and the difference between StatelessWidget and StatefulWidget is the foundational Flutter concept.
What state management should I use in Flutter?
For small apps, setState is sufficient. For larger apps, Riverpod is the current community favourite — it is null-safe by design, testable, and handles async state well. Provider is the older, simpler alternative. Bloc is popular in enterprise Flutter development for its strict architecture and testability. Start with Riverpod for new projects unless you have a specific reason to choose otherwise.
How is Flutter different for web versus mobile?
Flutter for web compiles Dart to JavaScript and renders in the browser using either an HTML renderer (better SEO, smaller size) or a CanvasKit renderer (pixel-perfect, larger download). Flutter web works best for web apps (dashboards, admin panels) where it shares code with a mobile app. It is not ideal for content-heavy public websites — Next.js or Nuxt remains a better choice for those. The shared-codebase benefit is most valuable when you genuinely target both mobile and web.