Many - probably the most accurate and honest - have negative reviews, by users who have been burned by them. Many have what look to be essentially fake 5-star reviews with no useful commentary. There are now 74 (that's SEVENTY FOUR) programs in the list, and it seems like new entries in the 'Mac cleaner' market space pop up every day, metastasizing like a cancer. Before you even *think* of installing any of them, PLEASE read this. As a public service to the MacUpdate community, I've found as many of these 'cleaner' apps on this website as I could and listed them them below. This is not a review per se, it is a discussion of the class of software to which this program belongs.