Awesome
This app is great. If you just want to do some vocal warm ups and you dont have a piano or cant play one then this is perfect for you. Also if you have an audition or performance that you are singing a cappella this will help you get your starting note. I tried all of the pitch pipes on iTunes and this is the best one. I has every note in any octave.
Pitch pipe about
Pitch Perfect (Pitch Pipe)