Similar Photo Cleaner is ad-supported application for Mac. It was developed to detect and remove duplicate photos and pictures. It is one of those pointless apps, that provide low functionality, but leads to severe computer and privacy problems. It installs without user’s consent, and does not disclose all conditions of the installation. The consequences of installing the program are pitiable: users start seeing ads and pop-ups in browsers, they get unknown programs installed without their intention. Besides, some users complain, that they cannot quit Similar Photo Cleaner, as it displays pop-up, that cannot be closed (see the picture below). All this peculiar properties put the program to the category of potentially unwanted apps.