When you’ve completed set-up, Bedtime will explain the importance of keeping consistent sleeping habits and sleeping and rising at around the same time. The app will calculate the number of hours you spend in bed by analyzing your motion and device usage. It will store this data inside Apple’s Health app.

How does Apple Bedtime track your sleep?

Bedtime in the Clock app tracks time that you spend in bed, but not how much you sleep or move. Your Apple Watch also doesn’t track sleep or time in bed. … You can also manually enter how much time you sleep: Open the Clock app, tap the Bedtime tab, then tap “Show more in Health.” In the upper-right corner, tap Add Data.

How does my phone know I’m sleeping?

The phone has an accelerometer sensor build in which is very sensitive and if placed in your bed we have a record of your movement over the nigh.