From Anonymous on 2017/10/10 03:52:13 +0000
I think adding optional binaural beat s and isotonic tones would be really helpful! (Maybe a few around 4-5 hz.)
Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/31830127-binaural-beats-and-isochronic-tones