You spot a bug on your phone, nowhere near a computer. Writing it up takes longer than fixing it, so you forget. FlutterFix removes the write-up and the computer: long-press the broken thing and Claude opens a pull request.
What it is
FlutterFix is an open-source, MIT-licensed tool for Flutter teams. A tester long-presses a bug in a running Flutter app, the report goes to Claude, and Claude opens a pull request with the fix.
github.com/digital-space-agency-com/flutterfix
My role
I created and maintain FlutterFix.
What I built
- Created and maintain FlutterFix, an open-source MIT-licensed Dart package, widget, receiver and server for Flutter teams.
- A tester long-presses the element, types one sentence, and the report is sent with the element, its text, the widget path that built it, a screenshot with the element outlined and a replay of the seconds before.
Architecture and approach
- A Flutter widget that resolves the pressed element, outlines it and captures a screenshot and a replay of the preceding seconds.
- Two sinks behind one interface: LocalReceiverSink for use at the desk, straight into a running Claude Code session; HttpSink plus OutboxSink for use anywhere.
- The cloud route: a Firebase function checks sign-in and a tester list, applies a daily cap and creates a GitHub issue with the screenshot; a GitHub Action then runs Claude, which opens a pull request.
- Nothing is merged automatically; your usual checks run on the pull request and you review it in the GitHub mobile app.
Hard problems
Context that makes a fix possible
A screenshot alone is not enough. Attaching the element, its text and the widget chain gives Claude enough context to find the code.
Flaky and slow screens
Replay captures the seconds before the press, so empty lists, slow loads and animation glitches are visible in the report.
Safe by default
Reports are limited to signed-in testers, capped per day and never merge themselves.
Outcome
- Open source on GitHub under the MIT licence.
- Works at your Mac in about five minutes, or away from it in about an hour of one-off setup.
Tech and keywords
- Flutter
- Dart
- Developer tools
- Open source
- Claude
- AI pull requests
- GitHub Actions
- Firebase Functions
- Bug reporting
- Widget inspector
- Mobile-first workflow
Quick facts
- App: FlutterFix
- Category: Developer tools
- Built by: David Miller, Digital Space Agency, Hamburg
- Type: Side project
Discuss a similar project All work
No mail app? Open in Gmail or write to info@dsa.team
FAQ
What did David Miller do on FlutterFix?
I created and maintain FlutterFix. Details of scope and stack are shared on request.
Who made FlutterFix?
FlutterFix work was done by David Miller of Digital Space Agency, a Flutter and mobile developer based in Hamburg. I created and maintain FlutterFix.
Can David Miller build a similar app?
Yes. I take contract engagements and am open to full-time roles, working in Hamburg or remotely on CET. Email info@dsa.team with a short description of the project.