Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.
Pzizz - Sleep at the push of a button! Now with "Focus"
Sleep Calculator - Want to wake up in a good shape?
Rise: Track Sleep & Circadian - Wake up & fall asleep better
Sleep Time - Alarm Clock - Sleep Time provides insight into your sleep patterns. By tracking your level of movement throughout the night, Sleep Time generates customized sleep data in easy-to-read charts.
Enough Sleep - Boost your performance by getting enough sleep!