Its an app for root that is to "allowing you to un-root your device while keeping a su backup.
This way you can make root "disappear"... until you choose to restore it via this app without further complications.
This nifty feature work on every rooted device." "First version of Voodoo OTA Root Keeper.
Also serves as temporary un-root
Distributed as free of charge - no warranty: license WTFPL.
This application makes a backup or a protected backup of your device root.
Your device must already be rooted. This application doesn't have the ability to root device."