There are two options to bring UI of MirrorFly into your application.
Option 1: MirrorFly UiKit - just few lines of code will allow you to integrate chat and call with your application. https://www.mirrorfly.com/docs/UIKit/ios/quick-start
Option 2: MirrorFly Sample application - gives you lot of options and room for customization. https://github.com/MirrorFly/MirrorFly-UiKit-iOS