A free program for Android, by App Anchor.

If you are tired of spending long hours in bed, stressed out, or having a difficult time concentrating, do vipassana, and move to the land of the sounds of rain with Relax – Rain sleeping sounds.

You can enjoy the calming sounds of rain with the option to adjust the volume of the sounds individually. This makes it possible to find the ideal combination and so encourages a deep relaxation of the mind and relax the muscles.

This application is ideal for sleeping, relaxation, meditation, concentration, breathing exercises, or if you have tinnitus problems (ringing in the ears).