Launch HN: Bitrig (YC S25) – Build Swift apps on your iPhone
Bitrig, a new iOS app developed by Kyle, Jacob, and Tim, allows users to create native Swift applications directly on their iPhones through AI-powered chat. The app utilizes Claude Sonnet 4.0 and a custom Swift interpreter to enable on-device app development, a feat previously requiring Xcode on a Mac. Users can preview their creations instantly, share them via URL, and even connect a paid developer account to compile and distribute apps through App Store Connect. AI
IMPACT Accelerates mobile development by enabling on-device AI-driven app creation, potentially lowering the barrier to entry for new developers.