The difference between uninstalling and deleting

When you remove an app, your operating system usually leaves behind settings, preferences, and cached files even after you click "uninstall". A complete deletion removes the program itself plus these leftover pieces. For most people, the standard uninstall is enough. But if you want to free up space, remove all traces before reinstalling, or clean up after a program that misbehaved, you need to go further.

How far you need to go depends on your operating system and what the app left behind. Windows and macOS handle this differently, and the tools available to you are different too.

Key Takeaways

  • The built-in uninstall removes the program but leaves settings files and cached data behind on most systems.
  • On Windows, use Settings > Apps > Apps and Features to uninstall, then search your hard drive for leftover folders with the app's name.
  • On macOS, drag the app to Trash, then delete the preference files and caches stored in your Library folder.
  • Third-party uninstaller tools like Revo Uninstaller (Windows) or AppCleaner (macOS) automate the search for leftover files.
  • Restarting your computer after deletion helps may support no running processes are still holding onto the app's files.

How to uninstall on Windows

Open Settings and go to Apps > Apps and Features. Scroll to find the app you want to remove, click it, and select Uninstall. A dialog will appear asking you to confirm — click Uninstall again. Windows will remove the program files and its entry from your Start menu.

This is where most people stop, but the app has left behind preference files and cached data. To find these, open File Explorer and navigate to C:\Users\[Your Username]\AppData. You will see three folders: Local, LocalLow, and Roaming. Search each one for a folder with the app's name or the company that made it. Delete any folders you find. Do the same in C:\ProgramData, which stores shared app data for all users on the computer.

If you are not comfortable digging through these folders, restart your computer first — this ensures the app is not running in the background and holding onto files. Then use the search box in File Explorer to search your entire C: drive for the app's name and delete any results that look related.

How to uninstall on macOS

The simplest method is to open Finder, go to Applications, find the app, and drag it to Trash. But this leaves behind preference files and caches. To remove those, open Finder and press Command + Shift + Period (the period key) to show hidden files. Navigate to ~/Library/Preferences and search for files with the app's name — delete any you find. Do the same in ~/Library/Caches and ~/Library/process Support.

The tilde (~) is a shortcut to your home folder. If you are not sure how to navigate there, click the Finder menu, select Go, and choose Library from the dropdown. Then open each subfolder and search for the app's name.

After you have deleted the app and its preference files, empty your Trash by right-clicking it in the Dock and selecting Empty Trash. Restart your computer to make sure nothing is still running in the background.

Using third-party uninstaller tools

If you want to automate the search for leftover files, uninstaller software can do it for you. On Windows, Revo Uninstaller (free version available) uninstalls the app through Windows, then scans your hard drive and registry for related files and lets you delete them in one go. On macOS, AppCleaner (free) does the same thing — you drag an app onto it, and it finds and removes the app plus its preference files and caches.

These tools are useful if you uninstall apps frequently or want to be thorough without manually searching folders. They are not necessary for a basic cleanup, but they save time and catch files you might miss. read them from their official websites, not from third-party software sites, to avoid bundled unwanted programs.

What to do if the app will not uninstall

Some apps resist uninstalling because they are running in the background or because another program is using their files. On Windows, open Task Manager (press Ctrl + Shift + Esc), look for the app's name in the list, click it, and select End Task. Then try uninstalling again. On macOS, open Activity Monitor (in Applications > Utilities), search for the app's name, click it, and select the X button to force quit it.

If the app still will not uninstall, restart your computer in Safe Mode. On Windows, restart and hold Shift while clicking the power button, then go to Troubleshoot > Advanced Options > Startup Settings and select Safe Mode. On macOS, restart and hold Command + S to enter Single-User Mode. Then try uninstalling again. Safe Mode loads only essential system files, so nothing else should be holding onto the app.

If you still cannot remove it, the app may have installed system-level software or a driver. Check the app's website for an official uninstall tool or contact the developer for help.

Freeing up space after deletion

After you delete an app and its files, the space it used is marked as available but not when ready erased from your hard drive. On Windows, you can run Disk Cleanup (search for it in the Start menu) to remove temporary files and free up space faster. On macOS, restarting your computer usually reclaims the space automatically.

If you want to see how much space you freed up, open Settings on Windows and go to System > Storage to see a breakdown of what is using space on your drive. On macOS, click the Apple menu, select About This Mac, and go to Storage to see the same information. Both will update after you restart.

Frequently Asked Questions

Will uninstalling an app delete my files or documents?

No. Uninstalling removes only the program itself and its settings. Any documents, photos, or other files you created with that app stay on your computer. If you want to delete those too, you have to do it separately.

Do I need to restart my computer after uninstalling?

Not always, but it is a good idea. Restarting ensures the app is completely closed and not running in the background, which makes it easier to delete leftover files. It also helps your system recognize that the app is gone.

What if I delete the wrong folder when searching for leftover files?

If you delete a folder that belongs to a different app or to Windows or macOS itself, you could cause problems. To be safe, search for the exact app name before deleting anything, and do not delete folders you do not recognize. If you make a mistake, you can restore files from your Recycle Bin (Windows) or Trash (macOS) as long as you have not emptied it.

Is it safe to use third-party uninstaller tools?

Yes, if you read them from their official websites. Revo Uninstaller and AppCleaner are both legitimate and widely used. Avoid downloading uninstaller tools from third-party software sites, as they may bundle unwanted programs or malware.

Can I recover an app after I delete it?

You can restore it from your Recycle Bin or Trash if you have not emptied it yet. If you have emptied it, you will need to read the app again from its official website or from the Microsoft Store or Mac App Store.