I knew this companys website before they had an app. and I loved the sound quality/selection it offered. I always said to myself they should make an app., they did and it is GREAT! Everything that is offered on the website is also offered on here. Each sound has its own volume control, its own "direction" choice(more out of left earbud/right earbud), and how frequently the sound plays. If youre unsure if you want to spend the money, go to the website and play around with it for a bit. Google "naturesoundsfor.me" on your computer and it should be the first result. Personally I think this app is worth well more then 1.99!