I need sound to help me fall asleep, help with my anxiety, and help me mask my tinnitus. I have been able to find something for all of that with this app. As one reviewer has noted there is no "tinnitus masking" sound recording and he prefers the ones where you can mix your own but that is personal preference. There are recordings here that do help mask my tinnitus. And while, yes, they are not free - they are well worth the minimal cost of freedom.