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CleanMyMac vs Mac Sai: catalog facts
CleanMyMac	Mac Sai
Paid Paid app with a free trial.	Free Free and open source.
macOS	macOS
Several maintenance tasks combined in one Smart Care scan Includes a malware scanner alongside cleanup	Cleaner, optimizer and malware scanner in one app Apple-notarized builds
macOS only Full use requires buying after the trial	macOS only Young project from a single maintainer
Downloadable app	Downloadable app
Closed source	Open 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 September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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