Its basically like whitenoise. Nature Background noises. The first one is in a field, the second one is ocean, the third one is a river, the forth one is after its done raining and the fifth one is night time (crickets). One thing I like about it (unlike whitenoise) is you can download the sounds to your card, not taking up phone memory. It also runs in the background, it has a icon in the taskbar so you can access it anytime. And of course it has a timer.