Why dragging an app to the Trash isn’t enough
When you drag an app to the Trash, macOS removes the app itself and nothing else. Apple’s own instructions say the same: if an app comes with an uninstaller, that is the best way to remove the app along with any login items, extensions and other data it stored elsewhere.
Most apps never include an uninstaller, so those files stay on your disk. One forgotten app leaves little behind. Years of trying and removing apps leave gigabytes of settings, caches and helpers, and macOS counts most of them under System Data.
Where an app hides its files
These are the folders inside your Library that apps use most. Each one belongs to you, not to macOS.
| Folder | What it holds | Safe to remove? |
|---|---|---|
| ~/Library/Application Support | Settings, databases and downloaded content | Yes, once the app is gone |
| ~/Library/Caches | Temporary files the app rebuilt on its own | Yes |
| ~/Library/Preferences | Small .plist files with the app’s settings | Yes, but you lose your settings |
| ~/Library/Containers | Data for sandboxed and App Store apps | Yes, for apps you removed |
| ~/Library/Logs | Log and crash reports | Yes |
| ~/Library/LaunchAgents | Helpers that start at login | Yes, only if they belong to the removed app |
Delete a leftover only when you are sure the app is gone for good. If you reinstall later, a fresh copy starts with default settings.
How to uninstall an app on a Mac
Pick the method that matches how you installed the app. Quit the app first, whichever you choose.
Method 1: Use the app’s own uninstaller
Open the app’s folder in Applications and look for a file named Uninstall or Uninstaller. Adobe, Microsoft Office and many drivers include one. Some apps also add a remove or reset option in their menus or settings. Run it, follow the prompts and you are done.
Method 2: Move the app to the Trash
- Open Finder and choose Applications, or find the app with Spotlight.
- Select the app and choose File, then Move to Trash.
- Enter your administrator password if macOS asks.
- Choose Finder, then Empty Trash, to get the space back.
Method 3: Delete it from Storage settings
Open System Settings, then General, then Storage. Click the info button next to Applications, sort by size and delete the apps you no longer open. This view makes the biggest apps easy to spot.
Method 4: Delete App Store apps from Launchpad
Open Launchpad, then click and hold any app until the icons wiggle. Apps downloaded from the App Store show an X in the corner, so click it and confirm. Other apps don’t show an X, so use method 2 for them.
How to find and delete leftover files by hand
This takes about 20 minutes for one app, and it works without any extra software. You search each Library folder for the app’s name.
- In Finder, choose Go, then Go to Folder, and enter
~/Library. - Open Application Support. Look for a folder named after the app or its developer.
- Repeat in Caches, Preferences, Containers, Logs and LaunchAgents.
- Drag each matching item to the Trash, then empty it.
Check login items and background helpers
Open System Settings, then General, then Login Items & Extensions. Switch off helpers that belong to apps you removed.
Know what to leave alone
Never delete anything from the top-level /Library or /System folders unless an uninstaller tells you to. When you are not sure whether a folder belongs to a removed app, leave it. A few spare megabytes cost less than a broken app.
Free app cleaner for Mac: AppCleaner by FreeMacSoft
AppCleaner is a small free app that does one job well. You drag an app onto its window, it lists the related files in your Library, and you choose what to delete. That saves you the manual search above.
How to use AppCleaner
- Download AppCleaner from the developer’s website, freemacsoft.net.
- Open it, then drag the app you want to remove into its window.
- Review the list of files it found, and untick anything you want to keep.
- Click Remove.
Watch out for look-alikes
Several apps have similar names. App Cleaner & Uninstaller, for example, is a separate paid product from a different developer. Search results also include download sites that wrap installers with extra software, so always use the developer’s own page.
AppCleaner removes apps, and that is all it does. It can’t show you what else fills your disk. For a wider cleanup, read our guide on Mac disk space analyzers.
App cleaner options compared
| Option | Cost | Best for | Limits |
|---|---|---|---|
| Drag to the Trash | Free | Apps you installed yourself | Leaves support files behind |
| Manual cleanup | Free | Careful users with 20 spare minutes | Slow, and easy to miss a folder |
| AppCleaner by FreeMacSoft | Free | Removing one app at a time | Uninstalls only. It doesn’t show disk usage |
| Paid uninstallers | Paid | People who want extra tools, such as extension managers | Check the plan and the macOS support first |
| MyMacStorage | $14.99 once | Uninstalling, plus every other kind of cleanup | No free trial, but a refund within 7 days |
Which apps to uninstall first
Sort the Applications list in Storage settings by size, then work from the top. These usually pay off most:
- Creative suites and video editors. They hold large caches, presets and project files.
- Games. A single title can use tens of gigabytes.
- Extra browsers. Each one keeps its own cache and profile data.
- Trial software. You tried it once, and it still sits on your disk.
- Developer tools you no longer use. Xcode and its simulators take enormous space.
How MyMacStorage removes apps and leftovers
MyMacStorage is a native Mac storage cleaner. Its Applications tool lists every app with its full size, plus the files that apps you already removed left behind. You decide what goes. Everything moves to the Trash, and Undo puts a whole cleanup back with one click.
The same scan also finds large files, byte-for-byte duplicates and caches, so you clear everything in one pass. Scanning runs on your Mac, and no filename leaves it. It costs $14.99 once, with no subscription and a 7-day refund. See the full feature tour on the home page.