Analyzes sleep your Apple Watch/Whoop/Oura already tracks. Scores each phase separately (deep, REM, light, continuity) instead of one combined number. Age-adjusted benchmarks. Factor tracking. Runs on-device. Features - 12-hour ring showing when each stage happened - 8 separate scores instead of one combined number - Age/sex-adjusted benchmarks from medical research - Factor tracking to spot what affects your sleep - 100% on-device, no account needed