Very early this year the Signal RP one controller was announced, and at the time it was the only full-size iOS controller in the works. We got a look at it at E3, and, well, it’s a controller. It still feels pretty prototype-y, as the rear trigger buttons seem particularly flimsy:
Signal isn’t getting specific on when the RP one will be released, but it looked and felt very 1.0 so it’s anyone’s guess as to where the controller is in the manufacturing and Apple certification process.