The motive of this app is to create a relaxing atmosphere for you to fall asleep.
This will help you to virtually move outside sleepy/relaxing environments like Campfire, Rain, Waterfall, Island, Fan, Lake, Ocean, Wetland, River, Night, Sea Whale, Train, Rough Sea, Thunder & Rainy Tent.
Those sounds make you relax and deep sleep. Screenshots show the whole features of this app.