Thanks so much to everyone who helped me out on this forum. I'm a designer, so I've had to learn AS3 and learn about all this app stuff too. It's been a huge learning experience.
Special thanks to Colin Holgate , who's come to my rescue many times - even at the last minute when uploading my binary! Colin - you're a genius!
Technicals: Flash CS 5.5, Air 2.7. Mostly vector graphics, with some bitmap backgrounds for scenes with a lot of movement. Stage quality = 'high' - I wanted it to look good.
It's really meant for the iPad. I recently tested it on an iPod touch, and it was very slow. It's early days.
iTUNES Appstore link:
Vlad's Vampire Bats