Superuser - ChainsDD

Superuser is an application for granting and manage Superuser rights (su) for your Android phone. Apps that are granted su have elevated permissions and can modify just about any part of the system. Superuser runs as any other app and gives you, the user, a place to see what apps you have allowed or denied, as well as view a log of what apps have used su when. The su binary is what other apps call when they need superuser rights. The binary checks the database maintained by Superuser to determine if you have already granted rights to the requesting app, and if not tells Superuser to display a prompt asking you for permission.

This app requires that you already have root, or a custom recovery image to work.