As a former percussionist, it is my duty and pleasure to love this app. I even developed a technique so that I can use larger muscles for more accurate tapping. I hold my phone in my left hand and rest the right side of the phone on the second knuckle of my right index finger. I then rotate from the elbow to tap the screen with my right thumb (similar to Stevens grip). Anyway, this “game” is beautifully designed and a joy to play.