Inside catcher: an open-source Flutter app worth studying
Flutter error catching & handling plugin. Handles and reports exceptions in your app!
catcher is an open-source open-source app / starter template for Flutter mobile app development, with 788★ on GitHub and last updated on 2024-08-10. This guide covers what catcher 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 catcher?
Flutter error catching & handling plugin. Handles and reports exceptions in your app! It focuses on learning from a complete, real-world Flutter codebase. The project lives at jhomlala/catcher and is maintained by jhomlala.
Why catcher is worth knowing in 2026
catcher carries 788 GitHub stars, 184 forks, 29 open issues. It has been around since 2019, and is mature and stable. For a App/Template 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.
Running catcher
catcher is a complete project you can clone and run. Make sure you have the Flutter SDK installed, then:
git clone https://github.com/jhomlala/catcher.git
cd catcher
flutter pub get
flutter run
From there, read through the project structure to see how a real Flutter app is organised — routing, state, data access, and UI — and fork it as a starting point for your own build.
When should you use catcher?
Reach for catcher when:
- you want a production-grade example to study or fork
- you’re bootstrapping a new app from a proven starter
- you learn best by reading complete projects
It’s especially relevant if your project touches android, dart, dartlang, flutter, flutter-examples, flutter-package.
catcher vs. the alternatives
If you’re weighing options in the App/Template space, these are the other projects developers most often compare catcher against:
- Inside immich: an open-source Flutter app worth studying
- Inside localsend: an open-source Flutter app worth studying
- Inside open-source-ios-apps: an open-source Flutter app worth studying
- Inside spotube: an open-source Flutter app worth studying
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 App/Template collection to compare them side by side.
Frequently asked questions
Is catcher free to use?
Yes. catcher is open source and free to use in your Flutter projects. You can view the source, report issues, and contribute on GitHub.
Does catcher work on both iOS and Android?
catcher 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.
How popular is catcher?
As of 2026, catcher has around 788 stars and 184 forks on GitHub, which puts it among the more widely used options in the App/Template space.
What are good alternatives to catcher?
Popular alternatives in the App/Template category include immich, localsend, open-source-ios-apps. The best choice depends on your app’s size, team, and performance needs.
Resources & links
- GitHub: jhomlala/catcher
- pub.dev: catcher
- Video tutorials: search YouTube for catcher
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.