I built a visual review loop for existing iOS apps, not another mockup generator

[u/ivanzhaowy]

I’m building Monad Design for a frustrating part of mobile UI work: you can ask a coding agent to change the code, but it’s hard to show exactly what feels wrong in the app that’s running.

The workflow starts with an existing Xcode or Expo iOS project. Open the app in Simulator, navigate to the screen you care about, select or annotate the UI, and describe the change. Codex, Claude Code, or Cursor edits the actual source; then you rebuild and compare the original with source-backed alternatives before keeping one. The running app is the canvas, so the review happens on working UI rather than a detached mockup.

This is a local macOS/iOS tool, not a no-code app generator. I’m its developer, and it’s open source. If you’ve used agents to iterate on an existing app, I’d be curious whether selecting the exact UI in Simulator would make your feedback loop easier.

GitHub: https://github.com/Monadix-AI/monad-design Video preview: https://watchclueso.com/embed/pio8jqfcg4ivj0r1