REA lets your AI agent take apart any app

REA (Reverse Engineer Anything) is a free, open source tool that lets your AI coding agent figure out how an app works without its source code, show you the evidence, and build that feature into your own project. Works with Claude Code, Codex and Cursor, on desktop apps, Android apps and websites. The Instagram one is noreel by Kino1994: Android only, you patch your own copy, and it stops getting Play Store updates. Only take apart apps you're allowed to; many app terms forbid it. What app would you look inside first?

October 11, 2026