In Apple’s new tvOS, data saved in core data is not persisted but is only cached. The tvOS may delete the data stored in core data when space is low. From https://developer.apple.com/library/tvos/documentation/General/Conceptual/AppleTV_PG/ Local Storage for Your App Is Limited The maximum size of an Apple TV app is limited to 200 MB. Moreover, your app can only access 500 KB of persistent storage that is local to the device (using the NSUserDefaults class).
