Noiseblend - One-tap music for every occasion, with Spotify Premium
Headspace - Meditation made simple. Brilliant things happen in calm minds.
22tracks - DJ curated Spotify playlists on iOS
Synctuition Meditation Program - Synctuition Meditation Program is a world’s most leading meditation app that comes with brand new 3D sounds that enhance the quality of sleep significantly.
Spotify - Map shows when two people play same song at same time
Calm - Calm.com can help you reduce stress and increase calm.