Lollapalooza, an annual music festival held in the heart of Chicago and maintained by Jane’s Addiction frontman Perry Farrel, is making the three day concert a little more interactive.

They’ve released an iPhone App (App Store link) that allows you to check which bands are playing what days and create you’re own custom roster. The App basically allows you to chart out your music experience and since everything is stored locally, you’ll still be in the know if AT&T’s service becomes spotty.

Via: iPhone Alley