How I audit a competitor's UI in 20 minutes with AI

A UI audit used to take me an afternoon. Now it takes one focused prompt and twenty minutes.

The teardown prompt

Paste screenshots of any flow and let the model do the first pass:

You are a senior product designer. Walk through this onboarding flow screen by screen. Flag every point of friction, ranked by drop-off risk. For each, name the heuristic it violates and propose a specific fix.

The output isn't gospel — it's a starting map. You'll disagree with a third of it, and that disagreement is where your own design judgment sharpens.

Track what you find in a scratch file with a simple score per screen, then revisit the lowest scorers first.