ThroughLine Games has updated the insanely well beloved Forgotten Anne has gained MFi support. This means you can use a controller with the game, and soon with iOS 13, both DualShock 4 and Xbox One controller support.
Everything works perfectly too, the second you touch the controller, the touch display goes away and you can play away! I spoke a bit about the experience of using the DualShock 4 with iOS 13 a while ago.
Forgotten Anne is available on PS4, Xbox One, Nintendo Switch, PC, macOS, and iOS.