It's decent I've used this same program on & off for about 3 1/2 years now. I've done my own research on Binaural Beats and brain synchronizations when I heard about this. The concept for this is without a doubt interesting. But since it's difficult for me to keep my mind from wondering  I have always had problems using this consistently. I will say that since I have known about this apps existence  I ALWAYS download this specific app because it has always remained reliable to an extent for me. Thanks developer(s).
October 11 2016