Once you've installed the app, you'll see a circular blue button hovering on your screen. A single tap will trigger a scan, while a long-press allows you to move the button to a new location. The analysis will then be presented as a gallery, with a different screen dedicated to individual problems. These are then collected as a list which can be shared via email.

As the app's Play Store description explains, "designing for accessibility can allow (developers) to reach a larger audience and provide a more inclusive experience." While the tool is meant for app creators, Google stresses that it could be used by anyone. If you've been struggling with a particular app, or think other people would benefit from a redesign, this could be an effective way to prove your case to a developer.