El Blancito

I've had this app for over a year. I'm a professional Musician and teach and play drums and guitar. I use this app everyday teaching and on gigs. It has everything, however my only complaint (and I really hope someone reads this and remedies the problem) is that the area you touch for changing the tempo is so small that it makes it difficult to quickly change the tempo. Often while trying to bump the tempo up a few beats the app thinks I'm tapping a new tempo or opens the numeric pad. After a year of using the app it's still annoying. Why is the area for tapping to change the click soun