Here’s some information to get yourself familiar along with your Mac journey. If you find one that claims it does, beware that the app is probably a scam.Īs for the best app to keep your Mac clean and fast, we recommend CleanMyMac - it’s an all-in-one Mac cleaner tool that automatically detects unnecessary files, system junks, and by removing them, you can free up a lot of disk space and increase system performance. Therefore, there is no such registry cleaner app for Mac. Unlike the Windows operating system, macOS does NOT have or use Registry. I’m wondering what’s the best app to use for cleaning registry and keeping Mac fast? Just switched from PC to Mac, new to everything especially how macOS works.