In rare instances, an iPad application may crash due to memory shortage. This most commonly occurs on older devices with less available RAM.
If you experience apps crashing on your iPad, the device may be using all of its available memory. This can often be fixed by turning off certain features that use large amounts of RAM:
Disabling some or all of these features will reduce the number of sudden app crashes you may experience. To turn off these features, follow the instructions below on your iPad.
iCloud
Notifications
iMessages
Multitasking Gestures
Spotlight Indexing