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OnyX vs CleanMyMac: catalog facts
OnyX	CleanMyMac
Free Free to use; the developer accepts donations.	Paid Paid app with a free trial.
macOS	macOS
Many maintenance tasks without typing Terminal commands Access to hidden settings in Finder, Dock and Safari	Several maintenance tasks combined in one Smart Care scan Includes a malware scanner alongside cleanup
Each version works only with one macOS release Latest version requires an Apple silicon Mac	macOS only Full use requires buying after the trial
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account 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 September 23, 2026

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