How to Uninstall Acorn on Mac

Save editable Acorn 8 images as .acorn files before uninstalling. A flat PNG or JPEG can lose editable layers; confirm the saved source opens from its own folder. The recorded test used a direct download, not a Homebrew installation.

Remove the app and inspect its data

Quit Acorn and move Acorn.app from Applications to Trash. Inspect the app-named support folder for presets; leave images in user-chosen folders where they are. The cask names Application Support/Acorn and the Acorn8 preference plist. The display name has no 8, while the bundle ID does; do not treat that difference as another app. Vendor guidance.

Check the result

ls -ld ~/Library/'Application Support'/Acorn ~/Library/Preferences/com.flyingmeat.Acorn8.plist

Run this read-only check after quitting the app. A printed path still exists; “No such file or directory” means that path is absent, while a permission error needs its own investigation.

If you installed it with Homebrew

The Homebrew cask has a zap list that includes Application Support/Acorn, cache, preferences and saved state; not images saved outside Library. Run the command below without --zap if you want to keep those files and inspect them separately. A manual --zap follows the whole cask list regardless of Mole’s checkboxes. Mole uses zap only when its targets are selected, owned and within the checked boundary; otherwise it removes selected remnants through its own flow.

brew uninstall --cask acorn

What Mole lists

The display-name support folder is a review row, unselected by default; exact Acorn8 cache and preferences are normally selected. Separately saved .acorn files are not cleanup targets.

What this test covered

The official Acorn 8.6.3 archive was removed on September 20, 2026. The selected display-name support folder was removed; no layered document or export recovery was tested.