Must have App when you are using 4EXT Recovery! (and you really should do it)
Would be too much to list all brilliant features, but you can do everything u want.
Easy install of newest Recovery when released, Choose several .zip's to install in one go and watch the magic happen (immense time reducing!), managing backups the easiest way possible and much much more.
This App combined with 4EXT Recovery itself is just awesome!