Some games stay with you even when you're not playing them. Sometimes, you get so deeply into a game that you need to bring it with you on the go. You need to keep up with everything that's going on, and even looking over stats or reading through the game's encyclopedia makes that time spent sitting on the bus more bearable.
If Starhawk does that for you, then congratulations! There's an app for that. The Starhawk Uplink lets you check out player and clan stats, look at leaderboards, and access info about maps, structures, and so on while on the go.
It won't help you drop a building on the car in front of you while you're sitting in traffic, but it'll let you know that while you were sitting there in gridlock, your buddy surpassed your score.