Wondering how to re-assign your skill points? Wondering if that level 5 elemental shotgun is really better than that level 8 revolver? There's an app for that! (For Android at least; not sure about iOS).
- Borderlands 2 Skill Tree by GD Sweden (free)
- Borderlands 2 Skill Calculator by Random Icon ($1.99)
- Borderlands DPS Calculator by Bulk Mass (free)
- Borderlands Quick DPS by Epic Wolf Software (free)
There are a few other apps too: soundboards, wallpapers, and guides. Just search the Android market for "borderlands."