I have been using it for years, mostly to check for updates to software and to delete files left behind when I have deleted application that I no longer use. Never had a problem, I agree somewhat that features like clearing space on the startup disk for the most part is worthless in that most of the space it saves are cache files, that are rebuilt automatically by applications. But I have never had any issues using CleanMyMac. Now MacKeeper is another issue altogether.
So is CleanMyMac absolutely necessary, no, but it does make some tasks easier, so it's worth having if you like to keep things up-to-date and organized.
So is CleanMyMac absolutely necessary, no, but it does make some tasks easier, so it's worth having if you like to keep things up-to-date and organized.