Good at first, but...
I payed for the $20 version. It claimed to have over 200 sounds...or something like that. It does have a few really good rain/water/fire sounds, but if you are looking for a decent thunderstorm sound, you won’t find it here. In fact, there are only really 20ish sounds that could be used for sleep (IMHO). The rest are songs, animal noises, odd frequency sounds and someone saying silly “inspirational” phrases.
There are some good things though. You can mix 3 sounds together, putting each a varying volumes to create your own “mix.” If they lost most of the silly noises and added different variations of certain sounds, ie thunderstorms, this app would be 5 stars. Until then, you’d be better off getting a much cheaper one.
Jmorgan209 about
Sleep Sounds by Sleep Pillow, v7.7