No, AC-22LX Editor for iOS does not support USB connections. To use AC-22LX Editor with your iOS device, you must use the Bluetooth Audio MIDI Dual Adaptor (BT-DUAL, sold separately) to connect via Bluetooth.
Refer to “Using the AC-22LX Editor/EV-1-WL, FS-1-WL Connection Guide” for details on how to connect the AC-22LX Editor with the AC-22LX.