The post discusses how to build and design an iOS video chat app using Swift, focusing on improving the user experience. The author starts with the Twilio Video for iOS Swift Quickstart and makes several design changes, including adding camera switching, mute functionality, and hiding the buttons until needed. The app's UI is designed to get out of the way when not in use, and the buttons are hidden after a short delay using a SwiftyTimer library. The author concludes by suggesting additional features to enhance the video chat experience.