Index Digital Media released a port of Shin Megami Tensei II for iOS devices. This release is a port of the Game Boy Advance version originally released in 2003. Shin Megami Tensei II has a couple of extra features like a built in glossary which records the game’s side stories and what demons you have in your party.
Shin Megami Tensei II also has a sound test mode made just for this version. If you don’t mind virtual joysticks and dig nostalgic RPGs you might want to check this game out. Oh, but you have to know Japanese since this wasn’t in the original draft.