Amazing! But expensive for what it is. – Brain.fm - Focus Music Review

This app really helps me focus while studying, however, it can honestly be replaced by running YouTube in the background. And there appears to be no online version or Windows version (correct me if I’m wrong). I would highly recommend to try it out for a month if you have trouble focusing like me. It is definitely better than listening to classical music to focus.
Review by Cameron 1997 on Brain.fm - Focus Music.