The best money I ever spent on my iPad was when I tipped an Uber driver a hundred bucks to bring it back to my hotel after forgetting it in his car. This app comes in a close 2nd place. I didn’t know this existed and I didn’t want to chance the money on the Hammond app. This thing works great on my older iPad and even my iPhone. Suggestions: 1) Add reverse colour keys to the Keyboard page to access programs more quickly. 2) Allow the rotary control to have a “toggle” setting for those of us that like to use a sustain style pedal to change the Leslie speed. 3) Give an option to increase the size of the UI. This would make manipulating the onscreen drawbars easier. 4) MINOR bug: sometimes the app seems to lose track of the (swell) expression pedal and the volume jumps to full until you move the pedal again. This happened on my iPad and iPhone. Overall this is a killer app and if you own a keyboard with so-so organ sounds, get this. I’m using it with a Kross 2 and it’s a perfect companion. Lightweight, connects with a single USB cable. Couldn’t be any easier to use and sounds incredible. Life-changingly dope.