RWCoreDataViewer is the simplest way to view your app's persisted Core Data store objects. RWCoreDataViewer presents a custom data viewer that lets you view all of your tables and their records.
Add pod 'RWCoreDataViewer' to your Podfile
To initialize the debug viewer include the following in you AppDelegate:
managedObjectContext.initDebugView()
When you want to display the viewer just triple tap anywhere on the screen.
Retrieve all of your persisted data as a JSON string with the ManagedObjectContext Extension
managedObjectContext.toJSON()