Open Sleep-offline sleep track

OpenSleep is the ultimate offline, privacy-first sleep tracker and local AI sleep coach designed to help you understand your sleep patterns without ever compromising your personal data.

100% PRIVATE & ON-DEVICE Your sleep is personal. OpenSleep processes all motion sensor data (accelerometer, gyroscope) completely locally on your device. Zero servers, zero trackers, and zero external APIs.

LOCAL AI SLEEP COACH Ask questions about your sleep, circadian rhythm, and morning fatigue to a fully on-device Gemma 4 AI Large Language Model. Experience instant, helpful responses completely offline with zero data leaving your device.

HEALTH SYNCHRONIZATION Seamlessly records your sleep cycles and stages (Awake, REM, Light, Deep) and synchronizes them directly with Apple Health.

FEATURES: • Advanced motion-based sleep cycle tracking • Interactive, gapless sleep stage ring charts • Local, serverless AI sleep coach powered by on-device LLMs • Detailed sleep history breakdown and trend analysis • Fully localized in English, Spanish, Portuguese, German, French, and Italian • 100% serverless, private, and open-source

Take control of your sleep quality with modern aesthetics and absolute data ownership. Download OpenSleep today.