The Call of Duty Elite app has been updated on iOS and Android to support this week's monolithic debut, Call of Duty: Black Ops 2. You can use the app to check your career stats and recent match performances, edit your classes, and search for and apply to Clans – pretty much the same stuff you can do with the app via Modern Warfare 3.
You can also use it to stream Call of Duty Elite TV, access multiplayer guides, and track challenges. The iOS app is universal and compatible with all iDevices running iOS 5.0 or greater; however, the app does not have iPhone 5 screen support.