Casper Glow - A magical light for better sleep
Dreem - A solution that acts on your brain to enhance sleep.
Generative.fm - Endlessly unique ambient music
Sleep Better - Track sleep cycles, monitor dreams & improve bedtime habits
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.
Soundly - Functional music for better sleep, focus and relaxation