Beautiful Flutter animations with stac

Stac is a Server-Driven UI (SDUI) framework for Flutter, enabling you to create stunning, cross-platform applications dynamically with JSON. Build and update yo.

CategoryAnimation
Stars★ 896
Last update2026-07-15
PriorityMedium

stac is an open-source animation library for Flutter mobile app development, with 896★ on GitHub and last updated on 2026-07-15. This guide covers what stac 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 stac?

Stac is a Server-Driven UI (SDUI) framework for Flutter, enabling you to create stunning, cross-platform applications dynamically with JSON. Build and update yo. It focuses on adding smooth, expressive motion to your Flutter app. The project lives at StacDev/stac and is maintained by StacDev.

Why stac is worth knowing in 2026

stac carries 896 GitHub stars, 106 forks, 18 open issues. It has been around since 2024, and is actively maintained (updated within the last month). For a Animation 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 stac

Add the package to your pubspec.yaml:

dependencies:
  stac: ^latest

Then fetch it and import it in your Dart code:

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

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

When should you use stac?

Reach for stac when:

  • you want delightful micro-interactions without hand-rolling tweens
  • you need page transitions or loading effects
  • you’re bringing a static UI to life

It’s especially relevant if your project touches android, cross-platform, dart, desktop, dynamic-ui, flutter.

stac vs. the alternatives

If you’re weighing options in the Animation space, these are the other projects developers most often compare stac 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 Animation collection to compare them side by side.

Frequently asked questions

Is stac free to use?

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

Does stac work on both iOS and Android?

stac 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, stac has around 896 stars and 106 forks on GitHub, which puts it among the more widely used options in the Animation space.

What are good alternatives to stac?

Popular alternatives in the Animation category include miru-app, anich, flutter-ui-nice. The best choice depends on your app’s size, team, and performance needs.

How do I install stac?

Add stac 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.

#android#cross-platform#dart#desktop#dynamic-ui#flutter