Rain, thunderstorms, the gurgle of a stream — I love to listen to nature to calm down.
I used to use ordinary recordings, but I recently found something better: breeze.
breeze is a collection of virtual wind chimes. You can select the chime that you like the most (i prefer bamboo), select a nature sound and enjoy the chime in action on the screen of your iOS device.
breeze is great. If you are into nature sounds as well, give it a try.