Copying App Data from a Container on an iOS Device
Copy an app’s data from its container on an iOS device to your file system to examine or modify the data.
Connect your device to your Mac.
In the Devices organizer, select Applications in the device.
Select the app.
Specify the name and location of the app-data package.
When you copy the app data, the app itself is not copied, and neither is any data the app stores in the keychain.
Analyzing the contents of an app’s container may provide important information to help you diagnose problems or tune the app. You can examine files that the app created—or that it obtained from an external source—to find out whether the files contain valid information or indicate a problem.