Pzizz - Sleep at the push of a button! Now with "Focus"

Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.

Awaken - Wake up to Awaken playing your favorite music.

Sleep as Android - Common alarm clocks ignore your sleep cycles, they wake you on schedule no matter your are currently in your deep sleep. Waking up from deep sleep is unpleasant, it makes you tired and it may negatively affect your productivity during the whole day.

Enough Sleep - Boost your performance by getting enough sleep!

Talalarmo - Minimalistic android alarm