Flutter InstantDB

Real-time, offline-first database for Flutter with reactive bindings. Build collaborative apps in minutes.

Features

Changes sync instantly across all connected clients with differential sync for reliable data consistency and conflict resolution.

Real-time Synchronization

Local SQLite storage with automatic sync when online. Your app works seamlessly offline and syncs when connectivity returns.

Offline-first Architecture

Widgets automatically update when data changes using Signals. No manual state management required.

Reactive UI Updates

InstaQL query language with schema validation ensures type safety and prevents runtime errors.

Type-safe Queries

User authentication and session management built-in, with support for anonymous users and authenticated flows.

Built-in Authentication

Real-time presence system with cursors, typing indicators, reactions, and avatars for collaborative applications.

Collaboration Features

Quick Start


// Initialize InstantDB
final db = await InstantDB.init(
  appId: 'your-app-id',
  config: const InstantConfig(syncEnabled: true),
);
 
// Create reactive UI
InstantBuilderTyped<List<Todo>>(
  query: {'todos': {}},
  transformer: (data) => (data['todos'] as List).cast<Todo>(),
  builder: (context, todos) {
    return ListView.builder(
      itemCount: todos.length,
      itemBuilder: (context, index) => TodoTile(todo: todos[index]),
    );
  },
)
 
// Perform mutations
await db.transact([
  ...db.create('todos', {
    'id': db.id(),
    'text': 'Learn Flutter InstantDB',
    'completed': false,
  }),
]);