It basically keeps track of what apps have root privileges. This newer app displays them in a nice "human readable" format. But to be honest, one probably never need open the app if everything is running properly.
Thank you so i gather then it is just a listing not anything really that does something?
It's absolutely necessary if you have a rooted phone. The app + the binary file is basically responsible for white listing/blacklisting what apps get superuser acces. Without it, you wouldn't have any control over what apps can access privileged commands.
Ok maybe i am asking the wrong question. What is the difference between the super user i have now and this one?