Sleep better with Sound Machine.
The app provides a wide selection of background sounds that you can play to sleep better and isolate your noise, you can also schedule sound stop (with gradual fadeout) to save on resources.
The app also comes with breathing exercises feature, which helps sleep better and increase your sleep quality.
Also, if you dont like any of the sounds by itself, you can mix it with other sounds, adjust their volumes to create & save your perfect mix!
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/