Hi. I’m writing to confirm this. I just tried it out on an iPad, with the 16n connected via a USB cable and the “camera kit” connector. I used MIDI learn in the AudioKit Synth One app, and got various knobs to recognize the faders. Worked on the first try.
I also did it in Patterning, using the 16n to control attack, decay, etc.
And all the while, the only thing powering the 16n was the iPad itself.