565 puzzles for free http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=287950536&mt=8
nice! just a question, isn't there any level selection mechanism? You just have to play them in order?
You're presented with one puzzle at the time, so it's not like TanZen where you can see your progress through completing the entire level pack. You just get one of the puzzles out of the database.