I'm nearly finished reworking my the "Palaver" project into a flashcard game for iOS. I got it running acceptably well on the newer high-resolution iPods/iPhones, and reworked the handling of fonts to allow pretty much any characters to be mixed into a deck. Next version will be a content push; I'm shooting for a new visualization and a few more content decks, and then I think it will be ready for the first App Store submission.