Its powerful engine analyzes the registry in seconds and provides solutions for uninstalled programs, file associations for programs that do not exist or blank shortcuts, among other things.
It also allows you to defragment the registry, saving lots of space if your PC is getting old. To do this, you must close all active applications because you will need to restart the system afterwards.
Finally, the Backup option lets you create a backup of the registry, which is always a nice thing to do before making changes to it.
This is a free, very light application which will help your PC to work much better.