Primitive application
This app is a misunderstanding because it performs its function very poorly, in particular the sounds of nature. The fact is that these sounds are clearly audible the same looped audio fragments. Take a Rain_Storm for example. It consists of the same looped audio fragment lasting about 20 seconds. And there are not even any variations! And this completely destroys the feeling of any naturalness and authenticity. This is just ridiculous, and I don't know what the app's authors have been doing for 10 years (judging by their description of the app), if the main basic function is still implemented in the most primitive way. This kind of applications should not work this way. The clearly audible looping of the same short fragment is the worst thing that can happen in this kind of applications.