The iPhone and iPad versions of this Virtual MIDI compatible Piano Synth are on sale today.
It looks really slick, but I've never played with it and according to YouTube and SoundCloud neither have you... because I can find no examples of it anywhere. So here's a big pretty picture!
According to their iTunes description everything is synthesized, no samples, and it looks like it has a whole hell of a lot of modulation options! Here are some of my favorite features from the lengthy list:• Virtual MIDI compatible
• MIDI Learn, for all knobs
• Background audio support
• Recorder, with iTunes file-sharing
• Copy audio to Pasteboard