How to uninstall apps on Mac completely

Contents
  1. With WIWIClean
  2. Manually
  3. FAQ

With WIWIClean

  1. Download and open WIWIClean. Allow Full Disk Access.
  2. In Storage, open Applications: every app shows its size and when you last opened it. The Unused 6+ mo label marks forgotten ones.
  3. Click Delete next to the app and confirm. Protected apps are removed without asking for your password again.
  4. Open App Data: apps you've already deleted are marked App deleted. Delete their data the same way.

Every row has a “?” that explains what it is and what happens after deletion.

Manually

  1. Quit the app: Q. If it doesn't quit, press Esc and force quit it.
  2. In Finder, open Applications, drag the app to the Trash and empty the Trash.
  3. Remove the leftovers: in Finder press G, open each folder from the table and move items with the app's name or bundle ID to the Trash.
FolderWhat's inside
~/Library/Application SupportApp data and databases — usually the biggest part
~/Library/CachesCache — the app re-creates it
~/Library/PreferencesSettings, .plist files
~/Library/ContainersData of App Store apps
~/Library/Group ContainersData shared between apps of one developer
~/Library/LaunchAgentsThe app's login tasks
Warning

Only delete items with the app's full name or bundle ID, like com.spotify.client. A partial name match may belong to another app.

Adobe, Microsoft, antivirus and VPN apps, and printer drivers install background services — remove them with their own uninstaller (“Uninstall …”) in the app's folder or on the developer's website.

FAQ

Why won't an app uninstall on my Mac?

Usually it's still running — quit it or force quit with Esc. Built-in macOS apps like Safari or Mail can't be removed: they live on the protected system volume.

Do I need to delete an app's leftover files?

If you don't need the app anymore — yes: data and cache of large apps take gigabytes. If you might come back to it, keep the data: settings and local files are lost with it.

How do I uninstall an app that isn't in Applications?

Find it with Spotlight (Space), select the result and press Return — Finder shows its folder. Then delete it as usual.

Can I uninstall apps from System Settings?

Yes: System Settings → General → Storage → ⓘ next to Applications → select the app → Delete. Leftover files stay in ~/Library.