App data is the information an app saves, such as projects, settings, downloads, and account details. It can sit inside the app, or in your Library folder. Check for your own files first, because deleting app data can remove work you want to keep.
Quick steps
- Open the app and look for a reset or data option in its settings.
- Copy or export any work you want to keep.
- Move the app to the Trash.
- Check your Library folder for leftover data.
- Move only the data that clearly belongs to the app.
Step 1: Check the app’s own settings
Some apps have a way to clear their data or reset themselves. Look in the app’s settings or preferences menu. Use it while the app is still installed, because it is the safest place to start.
Step 2: Save what you need
Copy documents, photos, or projects to a safe place. Some apps save your work in the cloud, so check that your files are in a place you can still reach.
One-time purchase. Works on macOS 15 or later, on Apple silicon and Intel Macs.
Step 3: Remove the app
Use the steps in the guide on completely uninstalling apps. Move the app to the Trash first.
Step 4: Check your Library folder
Search your Library folder for the app’s name. Check each folder before you move it to the Trash. Common places include Application Support, Containers, and Preferences.
Warning: App data can contain your only copy of a project. Back it up before you delete anything. Warning: Do not delete data from /Library or /System. Those belong to macOS.
Frequently asked questions
Does deleting app data remove the app?
No. Deleting data and removing the app are two separate steps. You can do either one.
Is app data stored in iCloud?
Some apps sync their data to iCloud. Check the app’s settings before you delete anything, so you do not remove a copy you need.
What is the safest order?
Save your work, check the app’s own reset option, remove the app, then check your Library folder last.
Want one simple step instead?
Uninstallzy shows every app with its size. Pick the app, confirm once, and it goes to the Trash.
One-time purchase. Works on macOS 15 or later, on Apple silicon and Intel Macs.