The iSleepMaster timed free. http://itunes.apple.com/en/app/zhu-mian-da-shi/id500393738?mt=8 ✿【iSleep Master】is a software of improve the sleep quality. ◆ Software Description: Collect most of the audio frequency of regularity in nature. These regular audio can relax to sleep. It including rain, thunder, streams, wind chimes, insects, ocean waves, sound frequencies of a variety of nature and so on!
