A free program for Android, by WebAppDev.

Binaural Beats Therapy is an application designed to help you achieve better results in cognitive therapy. With this application, you can stimulate your brain and achieve various results. It is ideal for people who want to meditate, sleep better, and have more relaxing moments.

How does it work?

This application is based on the principle of Binaural Beats. The brain will interpret the difference in frequencies as a sound. It will create the illusion of a third sound, a binaural wave. This sound will reach your ears and you will feel the effect in your ears, the same as if you were listening to a third-person voice.