RetroArch, a long-running (and very good) emulator frontend, is waiting for Apple to green-light it for the App Store, according to one of its developers. PPSSPP, a well-known PSP emulator, is also in the approval queue, its developer told The Verge via email.

And that’s not all! Another multi-system emulator (Nintendo 3DS, DS, GBA) called Folium is also awaiting approval. There are yet others — see this list on Reddit.