SyncKing is an iPhone application developed by Ashley Richards, designed to host a personalized second screen experience with various widgets. It caters to a wide range of uses, from enhancing live streams to facilitating local interactive play. By enabling customizable widgets, users can display images, scoreboards, statuses, notifications, and more in real-time.

To utilize SyncKing, a valid WiFi or Cellular connection is necessary for both the 'Host' and the 'Viewer.' Users simply need to enter a unique 4-digit code to connect to the appropriate host, making it easy to engage with viewers and enhance interactivity during live streams or local gatherings.