[wmf]

IIRC Apple also doesn't allow apps to load binary code at runtime. Redistributing derivatives of ROMs also sounds like a copyright problem.

[apatheticonion]

Could you recompile a ROM and embed it with a universal "emulator" game engine? (in the same way the OpenGoal project that recompiled Jak)

I guess that would be illegal because you'd then need to distribute the game code.

Perhaps a toolkit that allows users to compile the emulator+rom themselves?

But then I guess Apple doesn't let users run their own unsigned binaries so that's not possible :/