Because the xx want you to enjoy their new album Coexist from every angle, they've created an interactive app to go along with the album. The software, which is free, includes an interactive version of the album art that "reacts to your touch, movement, and environment" (ahhh, but... how?), visualizer videos for each track (if you own the album digitally), lyrics, official music videos, tour dates and, of course, updates from the band's camp and access to the online store.
Coexist in app form is available for through Apple's App Store for use on iProducts and in the Android Market.
Watch Pitchfork.tv's episode of "Surveillance" featuring the xx: