Ubisoft has announced Just Dance Now, a mobile app which lets you bust a move while you're on the move.

Revealed at Ubisoft's E3 keynote alongside the upcoming console game Just Dance 2015, this app turns your phone into a jukebox remote control, allowing you to transform any room with a TV into an impromtu dance hall.

Once you've downloaded the app and synced with the Just Dance site, you simply beam the choreography to a second screen, and then let your iPhone's accelerometer keep track of your movements.

According to Just Dance brand manager Jason Altman, you'll be able to use Just Dance Now to engage in dance-offs with other mobile players. In fact, though he has yet to test it with a real mob, Altman claims to have already simulated 20,000 people simultanteously using the app. 

Just Dance Now is expected to hit iPhones everywhere "soon".