THEY GOT EVERYTHING FOR THIS OS
The Swivl ($160) is kinda like that, only it works with iOS devices, so it’s useful to a helluva lot more people. Instead of tracking faces, the Swivl follows a paired marker, twisting side-to-side and tilting forwards and backwards to make sure you’re in frame. It connects via Dock Connector to allow for remote control of the action, and also includes a tripod adapter, so you can use it with your existing pocket cam.