Check a rating pattern by hand
Copy three numbers off any Amazon product page and get the same verdict the extension would show, with the rule that produced it. Nothing is stored and no account is involved.
Why you type the numbers in
StarSkew never fetches Amazon pages from a server. The extension reads the rating block from the page you already have open, in your own browser, which is what keeps it out of Amazon's way and out of your business. A checker that scraped listings on your behalf would give up both of those properties, so this page asks you for the three numbers instead.
The trade-off is the review-spike signal. Detecting that a review count quintupled in a fortnight requires having measured the same product earlier, so it cannot work from a single form submission. The other rules are pure arithmetic and behave identically here and in the extension — the page calls the same scoring code.
What a verdict does and does not mean
These rules read patterns in numbers, not honesty. A red result means the rating shape is unusual enough to deserve a closer look at the actual reviews. It is not evidence that a seller did anything wrong, and a green result is not a promise that the reviews are real — nothing here can see review text at all.
All four thresholds are documented on the signals page, and the checks that need a human are in how to spot fake Amazon reviews.
Rather not do this by hand?
The extension does all of it automatically on every Amazon product page you open, including the spike detection this page cannot do.
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