I mainly use the menubar part of the app several times a day. It replaces 2-3 menubar utilities I’d previously used.
For one thing I’ll often have dozens of browser windows open at a time which sucks up a lot of RAM, so if I’m about to also open another app that uses RAM, like Lightoom or Ableton Live, and I don’t want to close out the browser I’ll use CleanMyMac to free up RAM. For example right now I have about 40 browser tabs open, in two different browsers, plus a half dozen apps and two dozen menubar utilities, and I have 40Gb RAM installed:
Freeing up RAM kills the browser RAM caches (and caches in other apps, and perhaps even the system[?]). It makes some individual pages have to reload but I’m fine with that. After freeing up RAM:
(I do know that if I wanted I could employ an extension like this one to ‘suspend’ tabs and automatically free up RAM, but I prefer to suspend the RAM only as-needed, and that extension only frees up RAM from whatever browser it’s installed on.)
I also use it to empty the Trash without having to interact with the trash icon by revealing the dock followed by a press-choose-confirm. And I use it to check the machine’s temp and CPU load as well as the network speed.
I run the CleanMyMacX app itself maybe once a month. Maybe.