In the general preferences it says I can choose to display measurements as either "Screen pixels" or "Window points." What's the difference? Starting with version 3.5, xScope fully supports the Retina display. One of the great things about the Retina display is that you can no longer see pixels. Yet at the same time…
Is xScope supported on the new retina Macbook Pros? As of version 3.5, xScope now supports the retina displays on the new Macbook Pros from Apple. If you're using 3.5, you must be running OS X 10.7 Lion or newer. See xScope's in-app help for more information about xScope and the retina display.