Thanks for writing this... I downloaded it last week, and have been enjoying it. I've been using the G4FON tutor on my hiome computer, and have been having good results. With your program I can practice anywhere, and that's quite handy...
One thing though. It would be nice if there were a slight pause in the program after you press the "play" button, before the code started. It's a little tricky for me to press the button and then reset my hand with my pen to copy the code. I've been able to set up my pen and pad with my right hand and press the button with my left, but it's still kind of tricky. The G4FON trainer seems to have a small pause at the beginning of the sequence so it's not an issue.
I know it;s a nitpick, but by far my biggest problem with learning Koch is the speed with which I can physically write, and not my speed of decoding... Especially those "big" letters like "M" and "W." Not sure how I can get better at that other than more practice!
Thanks again for the great app!