Compare software

Mac Sai vs MacKeeper: catalog facts
Mac Sai	MacKeeper
Free Free and open source.	Paid Paid subscription, frequently offered at a discount.
macOS	macOS
Cleaner, optimizer and malware scanner in one app Apple-notarized builds	Cleanup, antivirus and ad blocking in one app Duplicate and junk file finder
macOS only Young project from a single maintainer	Mac only Closed source subscription software
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.