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Cleaner One Pro vs Mac Sai: catalog facts
Cleaner One Pro	Mac Sai
Freemium Free to download from Trend Micro, with some features offered as a paid upgrade.	Free Free and open source.
Windows, macOS	macOS
Shows what is filling the disk and helps free up space Available for both macOS and Windows	Cleaner, optimizer and malware scanner in one app Apple-notarized builds
Closed source commercial software Offers little that the built-in system storage tools cannot do	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 October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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