Whoever has trouble falling asleep or wants to understand their sleep pattern: there are quite a few sleep apps by now. For Android and iPhone. Often free or for a few euros.
Pzizz
Pzizz guides you with a calm voice, soft music and soothing sounds, with the aim of getting you to sleep within thirty minutes.
Calm
Calm focuses on meditation, mindfulness and relaxation exercises for those who want to tackle stress and sleep problems thoroughly.
Sleep Cycle
Sleep Cycle wakes you at the right moment, in the light sleep phase, via your smartphone's motion sensor.
Snorelab
Snorelab records how loudly and how much you snore, and gives tips.
Atmosphere
Atmosphere, finally, offers a wide range of relaxing sounds: nature, city sounds, binaural tones. Five suggestions. Each with its own approach.