How to clear application data for an iOS app installed on an Apple Silicon Mac?

Quoting from the Apple Developer documentation on Configuring the macOS App Sandbox

The first time the user launches your sandboxed app, the system creates its container — a folder in ~/Library/Containers that your app has exclusive read-write access to.

This is the location on the file system that macOS uses to store user-specific data for sandboxed apps.

To locate and delete the data files associated with an iOS app installed on macOS (e.g., via the App Store), follow the steps below:

1. Determine the installed app's bundle identifier:

   Open Terminal.app and run the following command-line to retrieve the bundle identifier of the installed iOS app:

   defaults read /Applications/<app_name>.app/Wrapper/iTunesMetadata.plist softwareVersionBundleId
   

   Replace <app_name> with the name of the app as it appears in the /Applications directory. You can find it by navigating to /Applications directory in Finder or Terminal.

   For e.g., install X (formerly Twitter) app from the App Store using this link: https://apps.apple.com/app/x/id333903271

   The app will appear as X.app in /Applications directory.

   Now running the command-line:

   defaults read /Applications/X.app/Wrapper/iTunesMetadata.plist softwareVersionBundleId
   

   will output the bundle identifier as:

   com.atebits.Tweetie2
   

2. Uninstall the app:

   Delete the app either through Launchpad or by removing the app bundle from the /Applications directory. You can also remove the app using the command-line:

   rm -rf /Applications/X.app
   

3. Navigate to the Containers Directory ~/Library/Containers/:

   Navigate to the directory by running the command-line:

   cd ~/Library/Containers/
   

4. Search for the app's Container using its bundle identifier:

   Search for the app’s bundle identifier to find its container directory by running the command-line:

   find . -iname "<bundle_identifier>"
   

   For example, in this case, run the command-line:

   find . -iname "com.atebits.Tweetie2"
   

   The find command will print the path for matching Container. In this case, the output will be shown as below (the Container ID may differ):

   ./ABE705EF-93F7-43C4-9966-443465F6942D/Data/Library/Application Scripts/com.atebits.Tweetie2
   ./ABE705EF-93F7-43C4-9966-443465F6942D/Data/Library/HTTPStorages/com.atebits.Tweetie2
   ./ABE705EF-93F7-43C4-9966-443465F6942D/Data/Library/Caches/com.crashlytics.data/com.atebits.Tweetie2
   ./ABE705EF-93F7-43C4-9966-443465F6942D/Data/Library/Caches/com.atebits.Tweetie2
   

5. Delete the app's Container:

   Delete the top-level Container directory (the one starting with the UUID), by running the command-line:

   rm -rf <container_id>
   

   For e.g. in the above case, run the command-line:

   rm -rm ./ABE705EF-93F7-43C4-9966-443465F6942D
   

6. (Optional) Delete Group Containers:

   Some apps may create a Group Container. To check for the presence of a Group Container, navigate to the directory: ~/Library/Group Containers/:

   cd ~/Library/Group Containers/
   

   perform a search using the same find command:

   find . -iname "<bundle_identifier>"
   

   then delete the corresponding group container folder (if any found):

   rm -rf <container_id>
   

7. (Optional) Delete Preferences and Caches:

   Navigate to the following directories one-by-one:

   cd ~/Library/Preferences/
   

   and

   cd ~/Library/Caches/
   

   search for the bundle identifier using the same find command and get rid of any matching files.

8. (Optionally) Restart your Mac:

   Restarting the Mac ensures all the related caches are fully flushed.

9. Check for TestFlight App Data:

   For apps installed via TestFlight, its data may reside under: ~/Library/Developer directory.

   Search and delete any containers or folders related to the bundle identifier here if the above steps didn’t remove all data.