A simple state manager, it's similar to ValueNotifier, but the core is to borrow from Getx.

Install

flutter pub add flutter_obs

Use

class Example extends StatelessWidget {
  const Example({super.key});

  @override
  Widget build(BuildContext context) {
    final count = Obs(0);
    return ElevatedButton(
      onPressed: () => count.value++,
      child: ObsBuilder(builder: (_) => Text('count: ${count.value}')),
    );
  }
}

Done