It does what it does very well.
I see a lot of people claiming this app is perfect. Im just going to assume these people are remarkably easy to amuse. Its very good, but it lacks some touches that would improve things. For example, the ability to save settings, see you dont have to adjust the volume and rain rate, and thunder and such every time you start the app.
OreWaUsopp about
SimplyRain, v1.2