Nameġ9 Best Mac Cleaner and Optimizer Software in 2020Īs said earlier, not every software is the best way to clean the Mac screen, RAM, and optimize memory. All the data was found on running the cleaner apps on a MacBook Pro (macOS Big Sur 11.3). Here’s the complete data of the size of junk found by different Mac cleaners listed in this article. Top 19 Best Free Mac Cleaning Software 2021 Junk Found By Different Best Free Mac Cleaner Softwareĭifferent best Mac cleaner apps work differently.