A free program for Android, by Z Mobile Apps.

White noise has been proven to be effective in helping babies sleep and stay asleep. Baby Sleep – White Noise is the best and most effective app to help you and your baby sleep better. It contains a great selection of low-frequency sounds that will be effective in helping you and your baby sleep and stay asleep.

It has a simple and easy-to-use interface and a timer. You just need to select the frequency and the sound you want to play, and the app will start playing it. The sound will play at a low volume, so you can hear it but it won’t be too loud.