Is it possible to delete save games in iOS?
I don’t know. I was an iOS beta tester, but I don’t own the final release so I can’t check. I’d say you can simply overwrite the save slots, just as like as the desktop release. I don’t remember who did the iOS port, maybe @RonGilbert himself.
I did the iOS port. There is no way to delete the save games other than uninstalling and reinstalling.