This isn't a backport of the Xcode 6 Playground feature to Objective-C. It's an iPad view controller and glue code intended for the simulator; you add your own

This isn't a backport of the Xcode 6 Playground feature to Objective-C. It's an iPad view controller and glue code intended for the simulator; you add your own code and the view controller provides controls that correspond to Playground features.