Stop fighting AI.
Start thinking clearly.
Prompt Doctor diagnoses the thinking flaws behind weak prompts, rewrites them at a higher level, and coaches you to reason like a strategist — not a search-engine user.
Free forever for basic analysis. No card required.
A second brain for your prompts
Diagnose flaws
Find the missing context, vague verbs and untested assumptions in any prompt.
Rewrite at a higher level
Get a tightened, structured prompt with clear roles, constraints and success criteria.
Learn the thinking
Each analysis ends with a short lesson — so next time you write the better prompt yourself.
How it works
Tap a step to jump to it.
Diagnosis
We scan your prompt for missing context, vague verbs, untested assumptions and structural gaps.
Why it failed
A clear breakdown of the thinking errors behind the prompt — so the fix isn't just cosmetic.
Rewrite
A tightened, structured rewrite with explicit roles, constraints and success criteria.
Coaching
A short lesson on the reasoning move you missed — so next time you write the better prompt yourself.
Simple pricing
Start free. Upgrade when thinking better starts paying off.