Intuitive apps often feel like they couldn't be laid out any other way, but the very quality that makes them intuitive is the product of rigorous planning and hard work by a team of designers; the Overflow tool is a new platform that makes designers jobs a little easier. The tool provides a system — itself intuitive — for charting out the user experience (also known as the UX) for apps, giving a visualization of the connections between buttons and pages.
The Overflow tool rethinks flow diagramming. It gives designers a new degree of precision without bogging them down in the details. For example, designers can use the tool to adjust the look or function of individual buttons on any given page, but it can also zoom out to provide a broader view of the app's UX as a whole.