Noisr

Mix rain, wind, ocean waves and more to sleep, study or focus. Set a timer, relax and upgrade to unlock extra sounds, long playback and no ads.

Create your perfect sound mix to sleep, focus, and relax. Noisr lets you blend calming sounds like rain, wind and ocean waves, adjust their volumes and drift into deep focus or restful sleep. Set a sleep timer with an optional fade out and enjoy uninterrupted background playback with Premium. Upgrade to unlock six extra premium sounds, a 12 hour timer and a completely ad free experience.

EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/