Pzizz - Sleep at the push of a button! Now with "Focus"
Sleep App - Relax, meditate & sleep
Brain.fm - Music designed for the brain to enhance focus, relaxation, meditation, naps and sleep within 10 - 15 minutes of use.
Pulse - Pulse is an application that downloads pictures from the internet and uses those images to automatically change your wallpaper.
SLEEP by Max Richter - Create your own musical sessions to meditate, focus or sleep
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.