No account. No email gate. The primary result and exports are free.
Work locally.Structured inputs calculate in this browser.Do not enter customer names, personal information, confidential evidence, or private deal details.
Definition and worked example
See the method before entering your own evidence.
Who should use it: Find out whether your positioning has an enemy your customers share, or a founder grudge dressed up as strategy.
Decision basis: The swap test redlines transparent generic phrases and competitor interchangeability; pressure mode records a response, proof, failure condition, and owner; the quotability test scores whether a stranger can restate each claim; the common enemy audit scores whether brand and customers share a verified enemy. The generic-language dictionary is published in the method code and is directional.
The default pre-read includes versions, result, open questions, and requested outcome. Your raw working text stays out unless you deliberately include it.
Where the free tool stops
The artifact makes the issue visible. The engagement resolves the organizational decision.
Petrichor helps the team reconcile disagreement, challenge evidence, assign ownership, and leave with a committed decision. You will not be asked to recreate this artifact.
The swap test redlines transparent generic phrases and competitor interchangeability; pressure mode records a response, proof, failure condition, and owner; the quotability test scores whether a stranger can restate each claim; the common enemy audit scores whether brand and customers share a verified enemy. The generic-language dictionary is published in the method code and is directional.
See the fields and decision basis
If a buyer asked what your company is against, what would your team say?: required input used in the result and artifact.
What kind of enemy does your positioning attack?: required input used in the result and artifact.
What proof do you have that customers share this enemy?: required input used in the result and artifact.
When did you last hear a customer complain about this enemy in their own words?: required input used in the result and artifact.
Where does the enemy show up on your website?: required input used in the result and artifact.
How does the enemy show up in sales conversations?: required input used in the result and artifact.
Read your top three competitors' homepages. Who are they against?: required input used in the result and artifact.
If you dropped the enemy from your positioning tomorrow, who would notice?: required input used in the result and artifact.
Questions about Common Enemy Audit
What do I leave with?
A versioned common enemy score and verification brief with visible reasoning, evidence status, next action, review date, and structured exports.
Does the result use a benchmark or AI?
No. The result uses the visible deterministic rules for this instrument and only the inputs you provide. It is not compared with other customers.
When does the paid work begin?
After the artifact. Petrichor helps the team challenge evidence, reconcile disagreement, assign ownership, and commit to the organizational decision without making you repeat the free work.