have NOTHING to do with this piece of junk. It will eat your machine alive.
It is, at best, an insidious piece of malware that is difficult to get rid of.
The Demo version will find "errors" and then ask for your credit card to "fix" them
Read the comments section at the bottom of this page:
The web is full of complaints about this piece of junk
DOES MACKEEPER REALLY HELP? IT SEEMS TO SHOW PROBLEMS. I FIX
THEM. I GO ON FIREFOX. THEN DO ANOTHER CHECK AND IT SHOWS MORE PROBLEMS.
IS IT REALLY DOING ANYTHING? THANKS BIG TIME!