You can remove or delete some built-in apps from your iPad. If you change your mind, you can download the apps again later.
Note: When you remove a built-in app from your iPad, you also delete any related user data and configuration files. Removing built-in apps from your Home Screen can also affect other system functionality.
Do any of the following:
Remove an app from the Home Screen: Touch and hold the app on the Home Screen, tap Remove App, then tap Remove from Home Screen to keep it in App Library, or tap Delete App to delete it from iPad.
Delete an app from App Library and the Home Screen: Touch and hold the app in App Library, tap Delete App, then tap Delete. (See Calendar
FaceTime (If you remove the FaceTime app from your iPad, you can still make or receive FaceTime calls in Contacts and the Phone app, but you can’t use SharePlay on your iPad unless you Find My (Removing this app doesn’t turn off location sharing or Find My for your device—it just removes the ability to view locations in the Find My app on that device.)
iTunes Store
Measure
Photo Booth
Stocks
Voice Memos
Change the default apps on iPad