If you're going to the Super Bowl, you've probably already spent plenty of money. Fortunately, the NFL isn't asking anything for its official Super Bowl XLVI app, released yesterday. While it's out on both iOS and Android, Android users have reported some problems installing — we actually had trouble getting it on an HTC Evo 3D. On the iPhone, it seems to work well, running pretty smoothly for what is essentially a large 3D map of Lucas Oil Stadium and the surrounding areas. The idea is to roll most of the things you'd want to do on a smartphone — location marking on Maps, restaurant reviews on Yelp, game day chatter on Twitter — into a single interface. In some cases, this is fairly effective. There are dedicated buttons that whisk you back to the virtual stadium, your seating row, or the place you've marked as your parking spot, and a "Huddle" feature that aggregates Twitter trending topics into some decent infographics.