Have you tried any of the Kemco JRPGs for mobile devices? I have yet to spend much time with any of their offerings, which is strange as they do look right up my alley.
People seem to have some pretty nice things to say about Fortuna Magus. It certainly looks like something JRPG fans would dig with its SNES-style sprites and turn-based battle system.
The English version of Fortuna Magus has just landed on the App Store, available for iPhone and iPad now at what they call 50 percent discount, but is actually even better -- down from $7.99 to $2.99. You don't have to be good at math to make an RPG, do you?
I'm going to try this one myself and report back.