White Noise - White Noise to help you sleep and games to wake you up.
Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.
Shhh Noise - A free sound generator designed to increase focus and relaxation.
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.
Ambiently - White Noise to help you concentrate, focus & relax
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.