Sleep Cycle

Sleep Cycle is an advanced alarm clock for Android that determines the best time to wake up from sleep. It tracks the fast and slow phases of sleep by analyzing sound and vibration, so you should put your smartphone on the nightstand or bed before going to sleep.

The best phase for waking up is the fast phase. This app monitors your sleep and wakes you up at the right moment. Waking up in the right phase determines how well you get a good night's sleep.

Application features

• real time sleep analysis;
• proprietary Sleep Cycle sound analysis technology;
• collection of visual statistics and making a schedule of sleep;
• a variety of specially selected alarm tunes;
• transferring the alarm by a simple shake or double tap;
• setting the alarm for an exact time or at a specific time interval.

All of these features are available for free. However, the app also has a set of paid features to help you learn more about your sleep.