I wouldn’t go near Ccleaner. It may work ok for some, but there is no guarantee that it will work as advertised for all, and that it won’t mess you up in some way shape or form.
“Ccleaner was written by computer professionals who know what to mess with and what to leave alone.”
Doesn’t matter who it was written by. Many computer professionals who really know their shoot, would not even give this consideration.
My advice is to stay away from ALL of these apps - especially the freebies like this one.
Cheers.