Show HN: qckfx – Stop manually checking if your AI agent broke your iOS app

AI coding agents can build iOS UI, but they can&#x27;t verify it. They can update a screen, but the UI might drift or break, and nobody catches it until a human checks.<p>qckfx gives your agent a baseline. Record a simulator session once. Every tap, scroll, and network response gets captured. On replay, each screen is compared against the original.<p>With our MCP, your agent triggers the tests and gets back visual diffs of exactly what changed. Updating the baselines is one click.<p>Under the hood:<p>- Full network replay (HTTP &amp; WebSocket)<p>- Initial disk &amp; keychain state captured during recording and restored on every run<p>- Precise scroll positioning (built from scratch; XCUITest only exposes this on macOS and iPad)<p>- No AI in the loop at runtime, fast execution<p>No SDK or code changes needed. Nothing to commit to git. Just download the app and go.<p>Everything runs locally. Your data stays on your machine.<p><a href="https:&#x2F;&#x2F;qckfx.com" rel="nofollow">https:&#x2F;&#x2F;qckfx.com</a>