Wide Color Viewer
This is a test iOS app for identifying wide color in a live camera feed. See my blog post on wide color in iOS for more context.
When you run this app on an iPhone device capable of capturing color in the Display P3 color space -- iPhone 7, 7 Plus, 8, 8 Plus or X -- it will capture a stream of images from the back camera and highlight the regions where color is outside the standard Red Green Blue color space (a/k/a "wide color").
It won't work on the simulator, so run it on a device!
(This hasn't been optimized for performance, but it runs well on an iPhone X!)