Brainwaves (www.unexplainablestore.com) for Mac OS X has been revved to version 1.3. It’s an audio brain stimulation app that uses Isochronic Tones and Binaural Beats “to bring the user into altered states of mind.”

The tones and audio recordings in the Brainwaves app have been created at 320 kbps. Brainwaves is designed to be used as a sleep aid, dream inducer, creativity booster, and more.

Brainwaves requires Mac OS X 10.9 or higher. It’s free, but does offer in-app purchases.