A Destiny companion app will be available for iOS and Android when the beta launches this week, Bungie announced.
The app features fully-realized 3D models of each of your characters, which will change in real time as you equip them with new weapons and armor. New changes made in the app are instantly reflected in the actual game itself.
During the beta, the iOS version will only be available on iPhone. iPad users can use an expanded version of the iPhone release. A Windows Phone version is not planned.
Thanks, IGN.