The DigiTech iStomp is an entirely new concept in pedals. It works just like a traditional stompbox with one huge exception. It can be completely reconfigured by loading it with any of the 47 (and growing) e-pedals available in the Stomp Shop app.
Unlike devices that require you to stay tethered to your iOS device, the iStomp does all of its processing internally. This means professional-quality, high-definition signal processing with no latency and you dont need your iOS device while youre playing.