Yes, Super Grav has MFi controller support!
Super Grav on iOS does support controllers and is compatible with the MFI standard.
Super Grav is a retro gravity cave flyer for 1-4 players, featuring single player or co-op multiplayer missions, racing and dogfighting.
Features: - Pixel-perfect collision detection and super smooth 60fps gameplay - Single-player Mission and time trial Race modes - Face-to-face 2-player tabletop play using just the touchscreen - Local multiplayer split-screen up to 4 players(*) - Novice, Normal and Expert difficulty modes make it easy for beginners to learn how to fly - Game Center online Leaderboards and Achievements - compete with friends for the best Mission scores and fastest Race times - Textbook 1, 2 or 3-Star rating on each mission.
Playable in single-player or multiplayer in either co-op or versus mode Race - Race laps around the caverns through the gates against the clock.
Playable in single-player time trial or multiplayer race mode Dogfight - Multiplayer deathmatch mode Pod Hunter - Multiplayer PowerUp Pod scavenge Super Grav - the retro arcade gravity game that's great fun chasing high-scores in single-player and even more fun in local multiplayer!
Super Grav supports MFi controllers.