Yes, Otto Matic has MFi controller support!
Otto Matic on iOS does support controllers and is compatible with the MFI standard.
WINNER of the Pocket Gamer Bronze Award! 10 levels on amazing 3D alien worlds! Battle 25 different alien creatures! Attack with 7 different types of space-age weapons Fight off giant radioactive killer vegetables! Ski behind giant metal sea monsters on a river of toxic ooze! Ride soap bubbles across noxious lakes of slimy goo! Get shot out of a cannon! Rescue humans from flying saucers! Ride bumper cars! Drink radioactive potions to grow to 50ft tall! Ride a zip-line to escape mutant radioactive robots! Pilot a flying saucer and lay waste to an alien fortress! And much, much more! The year is 1957 and a fleet of flying saucers from Planet X have come to Earth.
These saucers are under the control of the evil Brain Aliens who are abducting helpless human beings and taking them away to strange alien worlds to become slaves of The Giant Brain.
You are Otto Matic, the robot given the job of saving Earth from the Brain Aliens.
Your rocket ship will take you to each of the alien planets, and on each planet you must save as many humans as you can, but be careful because the Brain Aliens will try to abduct the humans before you can save them.
Otto Matic supports MFi controllers.