Brain.fm - Music designed for the brain to enhance focus, relaxation, meditation, naps and sleep within 10 - 15 minutes of use.
22tracks - DJ curated Spotify playlists on iOS
Soundlove.io - Choose and mix from 100+ high-quality sounds and noises to improve focus or relax.
Spotify - Map shows when two people play same song at same time
Can't Sleep - AI music scientifically designed for sleep
Cymbal - Music discovery powered by friends