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How the review rule check works

The audit runs one rule check: a fixed list of word patterns, each pointing at one Trustpilot or Google rule, with the matched words shown for every result.

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How does the review rule check work?

It is a heuristic: a fixed list of word patterns, each pointing at one Trustpilot or Google rule. A strong match makes a review worth flagging, a weak match means a person should read it, and no match means it likely stays. It reads only the words, so the platform decides every report.

A heuristic, and what that means

The check is a fixed list of 33 word patterns. Each one points at a Trustpilot rule, a Google rule, or both. When a pattern matches, the result shows the words that matched and the rule they point at. Nothing is scored as certain, and nothing is learned from past reviews.

The same code runs in every tool on this site, the free audit, the Chrome extension, the API and the embeddable checker. It reads words, not facts. That is why it can only say a review may break a rule. Trustpilot and Google make every decision.

The three verdicts

Worth flagging
At least one strong signal matched. The text on its own shows content a rule names, such as a promo code, a phone number or “never used them”.
Needs a human look
Only weak signals matched. The text points at a rule, but whether it breaks it depends on context, such as whether a name is a doctor who trades under it.
Likely stays
No signal matched. Most real complaints, however harsh, stay up, and this is the verdict for most 1-star reviews.

Every signal, by rule

This list is built from the code at every release, so it always matches what the check does. Strong means the text alone shows the content. Weak means it depends on context.

Trustpilot

Trustpilot rules and the signals that point at each one
RuleWhat the check looks for
Advertising or promotional
  • A promo, discount, coupon or referral code (strong)
  • A web link (strong)
  • A website address without a link (weak)
  • A call to contact the reviewer (strong)
  • A referral or affiliate link offer (strong)
  • Sends readers to another business (weak)
  • Offers to sell prescription medicine (strong)
  • About politics or the news, not an experience (weak)
Personal information
  • An email address (strong)
  • A phone number (strong)
  • Someone else's first and last name (strong)
  • A clinician named in full (weak)
  • Where someone lives (strong)
  • Another person's medical details (weak)
Not based on a genuine experience
  • Says they never used the business (strong)
  • Describes someone else's experience (weak)
  • The writer works for or runs a competitor (strong)
  • The writer works or worked for the business (weak)
About a different business
  • Says it is about another business (strong)
  • Describes a product a health brand does not sell (weak)
Harmful or illegal
  • A threat of violence (strong)
  • A slur (from a short list we do not print) (strong)
  • Profanity (weak)
  • Accuses the business of a crime (weak)
  • Instructions for unsafe use (weak)
  • Sealed court papers or copied text (weak)
  • Sexually explicit content (weak)
  • Praise of terrorism (strong)
Fake reviews
  • Reads as a review written to order (strong)
Incentivized reviews
  • Says the review was paid for or rewarded (strong)
Who can write a review
  • The writer says they are under 18 (weak)
  • The experience was years ago (weak)

Google

Google rules and the signals that point at each one
RuleWhat the check looks for
Spam and fake content
  • Says they never used the business (strong)
  • Describes someone else's experience (weak)
  • Says the review was paid for or rewarded (strong)
  • Reads as a review written to order (strong)
Conflict of interest
  • The writer works for or runs a competitor (strong)
  • The writer works or worked for the business (strong)
Off-topic
  • Says it is about another business (strong)
  • Describes a product a health brand does not sell (weak)
  • About politics or the news, not an experience (weak)
Personal information
  • An email address (strong)
  • A phone number (strong)
  • Someone else's first and last name (strong)
  • A clinician named in full (weak)
  • Where someone lives (strong)
  • Another person's medical details (strong)
Offensive content
  • A threat of violence (strong)
  • A slur (from a short list we do not print) (strong)
  • Profanity (weak)
  • Accuses the business of a crime (weak)
Advertising and solicitation
  • A promo, discount, coupon or referral code (strong)
  • A web link (strong)
  • A website address without a link (strong)
  • A call to contact the reviewer (strong)
  • A referral or affiliate link offer (strong)
  • Sends readers to another business (weak)
Restricted content
  • Offers to sell prescription medicine (strong)
Impersonation
  • Poses as an official notice (weak)
Dangerous content
  • Instructions for unsafe use (strong)
Illegal content
  • Sealed court papers or copied text (weak)
Sexually explicit content
  • Sexually explicit content (strong)
Terrorist content
  • Praise of terrorism (strong)

What the check cannot know

  • Order records: whether the reviewer ever bought from you, and when.
  • Identity: who wrote the review, and whether they are a competitor, a former employee or a real customer.
  • Anything off the page: replies, emails, support tickets, photos, or what happened after the review was written.
  • What the platform will decide. It names a rule; Trustpilot and Google apply it.

How the rules are sourced

Every rule carries a short quote from the platform’s own page, the link to that page, and the date the quote was last checked. Each rule page on this site shows them. The last verified dates are below.

  • Trustpilot: 8 rules, last verified .
  • Google: 12 rules, last verified .

How the policy monitor keeps them current

Every day at 07:17 UTC, a scheduled job opens the 7 Trustpilot and Google policy pages the rules come from and compares their text with the last copy. When a page changes, it opens an issue with the difference. A person then reads the change, updates the rule, its quote and its date, and adds the change to the review policy change log. The check itself never changes without that review.

Related policies

How pages and statistics are written and sourced is in the editorial policy. How we research and date the rest of the site is in our research methodology. To run the check on your own reviews, use the review self-audit. The code is open: see the developer docs.

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