This is a cool app

It works exactly as discribed. I am 27 and could hear the 25 and up age range/frequencies. I let my brother try it he is 35, and he could hear 35 and up. My mom is 55 and she could barely hear the 50, and could clearly hear the 60. To the previous review, I think you could not hear anything because you have bad hearing, not because it is a bad app, you should see a doctor.

Scottrc35 about Hearing Test