


It's not going to make your computer faster and better in the same way that washing your car doesn't make it run better. Utilities like CleanMyMac fall into two camps - things that actively damage your computer (which this doesn't do), and things that don't actually do anything harmful but cost money (which this does do). If you want to delete old or large files then choose "About this Mac" from the Apple menu, hit the storage tab, and then hit "Manage". Yes, you can still get a virus or malware on your Mac, but you really, really have to work at it to make that happen.) (Unlike some other operating systems, Apple has built-in code verification and code-signing features that largely make those worries null and void.

If you're worried about Malware then try MalwareBytes - although if you're remotely careful about what you do with your computer and watch the warnings that Gatekeeper puts up then you're probably never going to have to worry about Malware. If you really, really want to remove a bunch of applications/extensions/widgets then use something like AppCleaner (which is free and awesome and a self-contained binary that doesn't need to install something on your computer in order to run). Ask yourself how many apps you're installing on your Mac, and whether that figure is large enough that there's an actual need to install another app to help you remove your apps. Also, macOS and macOS apps create cache files for a reason, and when you remove them the application just has to recreate them next time it launches. Unless you're very short on space there's no value in deleting old files for the sake of it. Is it going to actively improve your computing experience? No.

I don't mean to be harsh, but this kind of question gets asked a lot.
