Looks like they bought up the dev's project (maybe signed him up too?) and decided to tweak it a bit. This is still on the market right now but it doesn't look quite the same as these screens... I bought it anyway, thought I'd at least give the creator a little bit more support while I wait to see what Gamevil's version is like.
I think the original version is/was Android exclusive, but Gamevil do iOS games too, so maybe it'll be the first case of a high-profile port going the other way!
EDIT: The original version seems to work still - there's just a message on the market page and when you start it up telling you there'll be no more support for it because Gamevil have the rights now and are working on their own version. From a few minutes' play I kind of like it (though I'm rubbish at Bemani games). Some problems with sync, but not too bad. Very good support for moving to SD, too - pretty much shifts everything.