Created by Russell Eric Dobda Guided Meditation Treks
This is the core of the "Binaural" application, created by Russell Dobda in 2015 That was my first ever iOS app, and it generates sine waves to be used for binaural beats.
This sample app is a cut-down version of that, which includes the core engine to create binaural beats.
Binaural beats are a sound healing technology used to create states of consciousness http://www.guidedmeditationtreks.com/binaural.html
Some background on the algorithms can be found here http://www.gunkyfunky.com/blog/open-source-binaural-beats
The production app can be found on the Apple app store at https://itunes.apple.com/us/app/binaural/id958442825?ls=1&mt=8
There is also an android app with the same name, which does the same thing https://play.google.com/store/apps/details?id=com.guidedmeditationtreks.binaural