A new home screen and a new way to describe the problem.
The app now opens to the camera; you point it at the problem and scan. No picture? Describe what's wrong in your own words, and fixin ranks the likely causes, still entirely on your phone.
Diagnoses now say how sure they are in plain language rather than as a percentage, and tell you when a photo is worth retaking.
Also: fixes to car and home diagnoses that could name the wrong fault.