Not sure about this one

I love these apps, but this one doesnt seem to have a way to use 2 at once. For example, you should be able to use the beats and the masking ones like stream together like other ones out there. I dont really enjoy listening to the beats alone unless masked by the sounds of stream or rain, etc. If they would add this like it claims to be able to do in the info page, I would give it a higher rating.

Jennyca1974 about BrainHack 2.0