MacShiny is fake Mac optimization program, that is promoted via phishing landing pages, claiming it will fix MacOS issues. After infiltration, MacShiny performs PC scan and finds nonexistent or inessential issues on Mac computer, presenting these problems like “critical”. Another trick is waiting for you in subscription payment. It is stated that monthly fee is $1.99, however, it goes up to $49.99 from the second months. There are many complains from our readers, that MacShiny slows down Mac perfomance.