This app indeed helps concentration and thinking – Gamma Waves (Legacy) Review

I am working on my economic research, so I need to concentrate on reading, thinking, figuring out complex theories, while keeping efficiency. Sometimes it's really difficult to concentrate, because you can be tired after 1-2 hours of studying or get lost in difficult theories. I tried more than 30 different music apps and online videos, this app is easy to use, and provide combination of three types of most effective sounds that helps me think and read.
Review by Happychange2016 on Gamma Waves (Legacy).