Ah, yeah! I remember this one from my old Treo WinMo phone. Snatched this baby before AppShopper could even do its thing. It doesn't look like much, but AA is a great puzzle-platformer, with lots and lots of levels. Each world brings about new & genuinely different challenges and abilities. It was a personal favorite then and still will be now that I can play it on the iPad.
If you care for this genre, try out the demo and make sure to give it a fair chance. It doesn't really start to show its true self before a few levels in.