State management in Flutter with cubit: a practical guide

Cubit is a lightweight state management solution. It is a subset of the bloc package that does not rely on events and instead uses methods to emit new states.

CategoryState management
Stars★ 597
Last update2020-07-09
PriorityLow

cubit is an open-source state-management library for Flutter mobile app development, with 597★ on GitHub and last updated on 2020-07-09. This guide covers what cubit does, why it matters in 2026, how to add it to your project, when to reach for it, and how it compares to the alternatives — plus a quick FAQ.

What is cubit?

Cubit is a lightweight state management solution. It is a subset of the bloc package that does not rely on events and instead uses methods to emit new states. It focuses on keeping your UI in sync with your app state as it changes. The project lives at felangel/cubit and is maintained by felangel.

Why cubit is worth knowing in 2026

cubit carries 597 GitHub stars, 25 forks, 0 open issues. It has been around since 2020, and is mature and stable. For a State management option, that combination of adoption and upkeep usually means a healthy community, production usage, and plenty of examples to learn from — the things that make a dependency safe to build on.

Installing cubit

Add the package to your pubspec.yaml:

dependencies:
  cubit: ^latest

Then fetch it and import it in your Dart code:

flutter pub get
import 'package:cubit/cubit.dart';

Check the package’s example/ directory and its pub.dev page for the exact API — cubit is versioned there with full docs so you always integrate against the current release.

When should you use cubit?

Reach for cubit when:

  • your widget tree needs to react to shared, changing data
  • you want to separate business logic from presentation
  • you’re scaling past setState and need predictable rebuilds

It’s especially relevant if your project touches dart, dart-library, dart-package, dartlang, flutter, flutter-package.

cubit vs. the alternatives

If you’re weighing options in the State management space, these are the other projects developers most often compare cubit against:

There’s no single winner — the right pick depends on your app’s size, your team’s familiarity, and your performance budget. Browse the full State management collection to compare them side by side.

Frequently asked questions

Is cubit free to use?

Yes. cubit is open source and free to use in your Flutter projects. You can view the source, report issues, and contribute on GitHub.

Does cubit work on both iOS and Android?

cubit is built for Flutter, so it targets iOS and Android from a single codebase, and typically web and desktop too depending on the project’s platform support.

As of 2026, cubit has around 597 stars and 25 forks on GitHub, which puts it among the more widely used options in the State management space.

What are good alternatives to cubit?

Popular alternatives in the State management category include bloc, getx, flutter-architecture-samples. The best choice depends on your app’s size, team, and performance needs.

How do I install cubit?

Add cubit to the dependencies section of your pubspec.yaml and run flutter pub get. Full versions and API docs are on pub.dev.

Resources & links

Part of FlutterCook — 500 hands-on guides to the best open-source Flutter libraries, UI kits, and apps. Explore the live GitHub trends or browse YouTube guides.

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