How does the app work?
During the night we go through several sleep cycles: transition to sleep, light sleep, deep sleep and dream sleep. In each of these stages we behave differently: toss and torn in bed, mutter or stay quiet.
The sensors in your Android device detect all the movements, the app figures out which stage of sleep you are in and wakes you up during the light sleep stage, when your body is naturally prepared for awakening.
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