Uninstall OnyX on Mac

Let any OnyX maintenance task finish, then decide whether its saved preferences matter before removing the utility. The September 19, 2026 record covers the app copied from the official package.

Quit and remove the app

Quit OnyX and move OnyX.app to Trash. Do not run another maintenance command just to uninstall it, and do not treat macOS caches it inspected as OnyX data. The official page has more product information.

Review the app’s data

The cask lists ~/Library/Logs/OnyX.log, exact com.titanium.OnyX preferences, a legacy OnyX.plist and generated help caches. The help-cache parent is Apple-managed, so only inspect the named product leaves.

If you installed it with Homebrew

The Homebrew cask has its own --zap list. brew uninstall --cask onyx removes the cask without that list; brew uninstall --cask --zap onyx also acts on its listed data without consulting Mole’s checkboxes. Zap includes generated Apple help-cache leaves; do not broaden them to parent folders. Mole also suppresses zap if its list would cross an unchecked, shared, unknown, or unsupported path; selected remnants still follow Mole’s own deletion path.

brew uninstall --cask onyx

Check the result

These commands inspect the running process and one relevant location. They do not remove anything:

pgrep -il "OnyX"
ls -ld "$HOME/Library/Preferences/com.titanium.OnyX.plist"

No pgrep match means no process with that name is running; a match needs identification before quitting anything. A listed path still exists, while an ls “No such file” error means only that exact path is absent. A permission error is inconclusive.

What Mole lists

Mole selects exact bundle-ID preference and saved-state rows by default when present. Alternate preference names and product logs need individual review; it does not clear system maintenance history.

What this test covered

The September 19, 2026 official-package test removed OnyX 5.1.0. It did not remove or verify Apple help-cache parent folders.