Not very good. Crackling noises.

The intermittent crackling and popping sounds make this App useless. Who wants to be relaxing and then be jarred by this awful noise. The App is also missing the simplest feature, being able to save settings. Cmon guys. Also, the sounds are not relaxing, but rather irritating. Since you HAVE to use headphones and cant use the internal speaker, its useless for sleeping (which is mostly when you would want this kind of program). Of course if you dont mind damaging your hearing while you sleep, getting tangled in the headset cord, and possibly crushing your phone, then its perfect for that.

Ritow about SoundCurtain