SleepCycle

Every one of us felt tired after what seemed to be a good night sleep and wondered what has gone wrong. The answer is rather simple - sleep phases. There are several of them and the trick is to know in what phase to wake up to be fresh and full of energy. SleepCycle does exactly that. It lets you know what is the optimal time to go to bed to wake up next day bright and fresh

* Calculates optimal wake up time
* Calculates optimal go to bed time
* Set alarm to wake up fresh