OpenSleep: Sleep Tracker & AI

OpenSleep tracks your sleep stages without a watch or ring, and explains them with an AI sleep coach that runs entirely on your phone.

TRACK SLEEP WITHOUT A WEARABLE

Choose how your phone listens to the night:

• Sonar (contactless): leave your phone on the nightstand. OpenSleep uses ambient sound levels to pick up sleep cues. Raw audio is never recorded or stored.

• Mattress mode: place your phone flat on the mattress next to your pillow and let the motion sensors follow your movement.

SEE EVERY STAGE OF YOUR NIGHT

• Awake, REM, light and deep sleep, shown on a stage ring and a full-night sleep pattern chart

• Bedtime, wake-up time and total sleep for every session

• History with day, week, month and year views to spot trends

AN AI SLEEP COACH THAT STAYS ON YOUR PHONE

Ask about your sleep, your routine or why you wake up tired. The coach is a large language model that runs on your device, so your questions and answers are never sent to a server. Download the model once, then chat even with no connection. GPU acceleration is used on supported phones.

WORKS WITH HEALTH CONNECT

OpenSleep can save completed sessions to Health Connect and import sleep records you already have.

PRIVATE BY DESIGN

• No account and no sign-up

• Sleep analysis happens on your phone

• Open source: anyone can read the code

Available in English, Spanish, Portuguese, German, French and Italian.

Sleep tracking is free. The AI Sleep Coach is a one-time purchase with no subscription.

OpenSleep is a wellness tool, not a medical device. Talk to a doctor about any sleep or health concerns.