Saved my butt...BUT could use some tweaking.

I perform with an a cappella quartet on a cruise ship and I misplaced my pitch pipe. Desperate, I turned to the app store where I found this app. I was ecstatic! We were able to perform and the audience got a kick out of it. So first of all thank you for designing this app, it really saved me serious ball-busting from the other fellas.
However, there are some things that would make it better and more worth the 2.99 I paid.
1. An F to F option to key it higher and make it easier to hear.
2. An actual pitch pipe sound instead of more of a horn sound.
3. An option to adjust the length of the tone.
Again, thank you for having the foresight to make an app like this. With these changes I can see this being a staple for my group for sure.

KanoDelerium about Pitch Pipe