This project(s) demonstrate how to create and use Frameworks that provide UI components to display in the hosting application. This can be useful when code needs to be reusable or parts of an application are created by third parties without providing access to source code.
The project setup is based an article by kodmunki™: https://kodmunki.wordpress.com/2015/03/04/cocoa-touch-frameworks-for-ios8-remix/