The BuddyJ iPhone app is the most basic DJ app out there. But also the most practical. Since the iPhone lacks additional outputs for cueing while DJ'ing, the simple solution is to use two touch devices. You just bring your phone when you DJ with your buddy.

A fully functional prototype is available within time constraints featuring pitch, pitchbend, cue and scratch/audio seeking.

The app was built during this 24 hour session by Patrik Axelsson (@patrikaxelsson) and Martin Hwasser (@martinhwasser) with fatherly guidance of Einar Andersson.