Lark estimates your sleep using your smartphone's motion sensors. Sleep is calculated as the period between the last time you touch your phone before sleeping and the first time you use your phone after waking up.
If you check your phone during the night, or if your phone is nearby while you sleep, Lark may detect that movement and record an interrupted or inaccurate sleep period. You can correct your sleep data directly in the app.
ℹ️ Lark does not provide sleep stage analysis (light, deep, REM). If you'd like detailed sleep analysis, consider connecting a wearable device that supports it through Apple Health or Google Fit.
Still need help? Contact our support team via the webform at support.lark.com/hc/en-us/requests/new