*late*
Ah, I actually have it on my iPad. It's kinda limited, but it works as intended. Luckily for me I have an instrument-to-tablet connector so I can record myself (and thus not rely on the lackluster default soundfonts), though I still have to get a special microphone so I can record myself playing through my amp (and thus not rely on the not-at-all-for-bass digital amp). And get better at playing, of course, since I still can only cheat solos at this point.
Mind thee, I haven't actually used it in a while. Not that I lost interest in making music or anything, I've just been kinda sidetracked—first by some new games, then by the move. Soon as I get my gear back from storage I'm-a have to get back to it for sure...