My father called me up a couple of weeks ago to tell me had bought himself a "new toy". He purchased an iPad 2 much to my surprise. So as soon as we drove up with the kids to visit him, I made sure to buy your B/C Hohner app and mess around with it.
Having never touched anything more than piano accordions before, this was literally/virtually my first time trying out a 2 row button box. It was such fun to see the look of disbelief on my folks faces when they came downstairs for breakfast. There I was, sitting on the couch with the iPad leaning on my chest as I tapped away a rudimentary version of "The Musical Priest" (which I'd quietly been learning the night before while everyone slept!)
Anyway, well done on the application! So much fun to practice with. I mean, why spend $800-$1,000 on a Hohner Morgane (or Double Ray) when I can practice with your app first and get the basics down?