Here are all the apps that work with the Surface Dial

Microsoft's Surface Dial was the surprise announcement at the company's hardware event last week. It's designed as another input device to compliment the mouse / keyboard, touch, and stylus. In drawing apps like Sketchable or Sketchpad you'll be able to use it to generate a radial menu that lets you quickly change color or brush options, but Windows itself will mostly support basic zooming and volume controls at launch.
Not every app will have a rich amount of Surface Dial support when the