Detailed Comparison

An in-depth comparison of Reacton with other popular Flutter state management solutions. This page covers feature matrices, code comparisons, and guidance on when each solution is the best fit.

Feature Matrix

Feature	Reacton	Riverpod	BLoC	Provider	GetX	Signals
Core State
Writable state	reacton()	StateProvider	Cubit.emit	ChangeNotifier	.obs	signal()
Computed / derived	computed()	Provider	Separate BLoC	Manual	Rx getters	computed()
Selector (sub-state)	selector()	select()	BlocSelector	Selector	N/A	N/A
Family (parameterized)	family()	.family	N/A	N/A	N/A	N/A
State machines	Built-in	Manual	bloc events	Manual	Manual	Manual
Observable collections	Built-in	Manual	Manual	Manual	RxList/Map/Set	Manual
Lenses	Built-in	Manual	N/A	N/A	N/A	N/A
Async
Async data fetching	asyncReacton	FutureProvider	emit in async	Manual flags	StateMixin	Manual
Query with caching	QueryReacton	riverpod_query	N/A	N/A	GetConnect	N/A
Retry policies	RetryPolicy	Manual	Manual	Manual	Manual	Manual
Optimistic updates	OptimisticUpdate	Manual	Manual	Manual	Manual	Manual
Debounce / Throttle	Debouncer/Throttler	ref.debounce	transformEvents	Manual	debounce()	Manual
Flutter Integration
Scope / Provider	ReactonScope	ProviderScope	BlocProvider	MultiProvider	Get.put	SignalProvider
Context extensions	context.watch/read/set	ref.watch/read	context.read	context.watch	Get.find	N/A
Listener widget	ReactonListener	ref.listen	BlocListener	N/A	ever()	N/A
No base class needed	Yes	No (Consumer)	No (BlocBuilder)	No	No (GetView)	Yes
Architecture
Modules	ReactonModule	N/A	N/A	N/A	N/A	N/A
Middleware	Built-in	N/A	BlocObserver	N/A	N/A	N/A
Sagas	Built-in	N/A	N/A	N/A	N/A	N/A
Persistence	Built-in	riverpod_persist	hydrated_bloc	N/A	GetStorage	N/A
History (Undo/Redo)	Built-in	Manual	replay_bloc	N/A	N/A	N/A
State branching	Built-in	N/A	N/A	N/A	N/A	N/A
CRDT (collaborative)	Built-in	N/A	N/A	N/A	N/A	N/A
Testing
Test store	TestReactonStore	ProviderContainer	blocTest	Widget tests	Mock controller	Manual
Mock utilities	MockReacton	overrideWith	MockBloc	Mock notifier	Get.testMode	Manual
Effect tracker	EffectTracker	N/A	N/A	N/A	N/A	N/A
Graph assertions	GraphAssertion	N/A	N/A	N/A	N/A	N/A
DevTools
Inspector	Dedicated panel	Dedicated panel	Dedicated panel	N/A	N/A	N/A
Dependency graph	Visual graph	N/A	N/A	N/A	N/A	N/A
State timeline	Yes	Yes	Yes	N/A	N/A	N/A
Performance metrics	Per-reacton	N/A	N/A	N/A	N/A	N/A
Tooling
CLI	reacton_cli	riverpod_cli	N/A	N/A	get_cli	N/A
Code generation	reacton_generator	riverpod_generator	freezed (common)	N/A	N/A	N/A
Lint rules	3 custom rules	riverpod_lint	bloc_lint	N/A	N/A	N/A
VS Code extension	Yes	Yes	Yes	N/A	N/A	N/A
Other
Learning curve	Low-Medium	Medium	Medium-High	Low	Low	Low
Boilerplate	Minimal	Low-Medium	High	Medium	Low	Minimal
Pure Dart support	Yes	Yes	Yes	No	Partial	Yes

Architectural Philosophy

Reacton

Atom-based reactivity. State is declared as independent atoms (reacton()) that form a dependency graph. Computed values automatically track their sources. No classes, no events, no streams for basic state. The reactive graph handles propagation. Advanced patterns (state machines, sagas, CRDT) are built into the library rather than requiring separate packages.

Riverpod

Provider-based with compile-time safety. Every piece of state is a provider. Riverpod v2 introduces code generation for a more concise API. Strong emphasis on compile-time error detection and ref-based lifecycle management. Architecture is flexible but guided by the provider pattern.

BLoC

Event-driven with strict separation. State changes happen through events processed by a Bloc class. The unidirectional data flow (Event -> Bloc -> State) enforces discipline. Good for large teams that benefit from rigid conventions. Higher boilerplate but very predictable.

Provider

InheritedWidget wrapper. The simplest step up from raw Flutter. Uses ChangeNotifier classes exposed through the widget tree. Limited built-in features for async, testing, or advanced patterns. Often used as a foundation before migrating to Riverpod.

GetX

All-in-one toolkit. Bundles state management, routing, DI, and HTTP in one package. Minimal boilerplate and fast to get started. Less structured, which can lead to maintenance challenges in large apps. Uses magic strings and global singletons extensively.

Signals (flutter_hooks / signals)

Fine-grained reactivity inspired by SolidJS. Similar philosophy to Reacton with signals and computed values. Focuses on the core reactive primitive. Fewer built-in advanced features (no persistence, no sagas, no state machines) but extremely lightweight.

Code Comparison

Counter (Minimal Example)

Reacton:

final counter = reacton(0, name: 'counter');

class CounterPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final count = context.watch(counter);
    return Scaffold(
      body: Center(child: Text('$count')),
      floatingActionButton: FloatingActionButton(
        onPressed: () => context.update(counter, (c) => c + 1),
        child: Icon(Icons.add),
      ),
    );
  }
}

Riverpod:

final counter = StateProvider<int>((ref) => 0);

class CounterPage extends ConsumerWidget {
  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final count = ref.watch(counter);
    return Scaffold(
      body: Center(child: Text('$count')),
      floatingActionButton: FloatingActionButton(
        onPressed: () => ref.read(counter.notifier).state++,
        child: Icon(Icons.add),
      ),
    );
  }
}

BLoC:

class CounterCubit extends Cubit<int> {
  CounterCubit() : super(0);
  void increment() => emit(state + 1);
}

class CounterPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return BlocProvider(
      create: (_) => CounterCubit(),
      child: Scaffold(
        body: Center(
          child: BlocBuilder<CounterCubit, int>(
            builder: (context, count) => Text('$count'),
          ),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () => context.read<CounterCubit>().increment(),
          child: Icon(Icons.add),
        ),
      ),
    );
  }
}

GetX:

class CounterController extends GetxController {
  var count = 0.obs;
  void increment() => count++;
}

class CounterPage extends StatelessWidget {
  final ctrl = Get.put(CounterController());
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(child: Obx(() => Text('${ctrl.count}'))),
      floatingActionButton: FloatingActionButton(
        onPressed: ctrl.increment,
        child: Icon(Icons.add),
      ),
    );
  }
}

Async Data Fetching

Reacton:

final cityReacton = reacton('London', name: 'city');
final weatherReacton = asyncReacton<Weather>((read) async {
  final city = read(cityReacton);
  return await WeatherApi.fetch(city);
}, name: 'weather');

// Widget:
final weather = context.watch(weatherReacton);
return weather.when(
  loading: () => CircularProgressIndicator(),
  data: (w) => Text('${w.temp}C'),
  error: (e, _) => Text('Error: $e'),
);

Riverpod:

final cityProvider = StateProvider<String>((ref) => 'London');
final weatherProvider = FutureProvider<Weather>((ref) async {
  final city = ref.watch(cityProvider);
  return await WeatherApi.fetch(city);
});

// Widget (ConsumerWidget):
final weather = ref.watch(weatherProvider);
return weather.when(
  loading: () => CircularProgressIndicator(),
  data: (w) => Text('${w.temp}C'),
  error: (e, _) => Text('Error: $e'),
);

BLoC:

// Events
abstract class WeatherEvent {}
class FetchWeather extends WeatherEvent { final String city; FetchWeather(this.city); }

// States
abstract class WeatherState {}
class WeatherLoading extends WeatherState {}
class WeatherLoaded extends WeatherState { final Weather weather; WeatherLoaded(this.weather); }
class WeatherError extends WeatherState { final String message; WeatherError(this.message); }

// Bloc
class WeatherBloc extends Bloc<WeatherEvent, WeatherState> {
  WeatherBloc() : super(WeatherLoading()) {
    on<FetchWeather>((event, emit) async {
      emit(WeatherLoading());
      try {
        final weather = await WeatherApi.fetch(event.city);
        emit(WeatherLoaded(weather));
      } catch (e) {
        emit(WeatherError(e.toString()));
      }
    });
  }
}

// Widget:
BlocBuilder<WeatherBloc, WeatherState>(
  builder: (context, state) => switch (state) {
    WeatherLoading() => CircularProgressIndicator(),
    WeatherLoaded(:final weather) => Text('${weather.temp}C'),
    WeatherError(:final message) => Text('Error: $message'),
    _ => SizedBox(),
  },
)

Form Validation

Reacton:

final emailReacton = reacton('', name: 'email');
final passwordReacton = reacton('', name: 'password');

final emailErrorReacton = computed((read) {
  final email = read(emailReacton);
  if (email.isEmpty) return null;
  return email.contains('@') ? null : 'Invalid email';
}, name: 'emailError');

final canSubmitReacton = computed((read) {
  return read(emailErrorReacton) == null &&
         read(emailReacton).isNotEmpty &&
         read(passwordReacton).length >= 8;
}, name: 'canSubmit');

BLoC:

class LoginFormCubit extends Cubit<LoginFormState> {
  LoginFormCubit() : super(LoginFormState());

  void emailChanged(String email) => emit(state.copyWith(
    email: email,
    emailError: email.contains('@') ? null : 'Invalid email',
  ));

  void passwordChanged(String password) => emit(state.copyWith(
    password: password,
  ));

  bool get canSubmit =>
    state.emailError == null &&
    state.email.isNotEmpty &&
    state.password.length >= 8;
}

When to Choose Each Solution

Choose Reacton when:

• You want minimal boilerplate with powerful built-in features
• You need advanced patterns (state machines, sagas, CRDT, state branching) without extra packages
• You want a unified testing API with TestReactonStore
• You prefer atom-based reactivity over class-based state
• You want built-in persistence, undo/redo, and middleware out of the box
• Your team is small to medium and values developer velocity

Choose Riverpod when:

• You want compile-time safety and ref-based lifecycle management
• You are already familiar with the Riverpod ecosystem
• You want code generation (v2) for provider declarations
• You have a medium to large team that benefits from Riverpod's structure

Choose BLoC when:

• Your team values strict unidirectional data flow enforced at the architecture level
• You work on a large team where rigid conventions prevent inconsistency
• You want the event-sourcing pattern (replay, transform events)
• You are comfortable with higher boilerplate for predictability

Choose Provider when:

• You need the simplest possible step up from raw Flutter
• Your app is small and unlikely to grow complex
• You want official Flutter team backing (Provider is endorsed by Flutter)

Choose GetX when:

• You want rapid prototyping with minimal setup
• You prefer an all-in-one solution (state + routing + DI + HTTP)
• Speed of development matters more than architectural purity

Choose Signals when:

• You want the lightest possible reactive primitive
• You are coming from a web framework (SolidJS, Preact Signals)
• You do not need built-in persistence, testing utilities, or DevTools

Migration Difficulty

From	To Reacton	Effort	Notes
Provider	Low	1-2 days	Mostly mechanical: ChangeNotifier to reacton(), context.watch() is identical
Riverpod	Low	1-2 days	Concept mapping is 1:1. See From Riverpod
BLoC	Medium	3-5 days	Flatten Bloc classes into reactons. Events become direct set/update calls. See From BLoC
GetX	Medium	3-5 days	Replace .obs with reacton(), workers with effects. See From GetX
setState	Low	Hours	Lift local state into reactons as needed

All migration guides are available in the Migration section.