Instant trust grades on every product page. 7 detection signals. AI-powered deep analysis. 100% private, 100% on your device.
No signup, no account, no configuration. Install and go.
ReviewShield runs automatically on every Amazon product page. A trust badge appears next to the star rating within 2 seconds.
A through F, color-coded. A means reviews look genuine. D or F means significant manipulation detected. Click for the full signal breakdown.
See adjusted ratings with fakes removed, individual review flags, and category links to browse alternatives. All from one click.
Each signal is scored independently, then weighted into a composite grade. Click the badge to see exactly how every signal contributed.
What percentage of reviews are from verified buyers? Low verified rates are a red flag.
Detects suspicious clustering. If 30 reviews landed on the same day, something is off.
Genuine products have a natural rating curve. Manipulated ones spike at 5 stars with a gap in the middle.
Catches copy-paste reviews and templated language that fake review farms reuse across products.
Checks for patterns like generic names, single-review accounts, and other hallmarks of fake reviewer profiles.
Detects phrases associated with free products, discount codes, and other incentivized review schemes.
Suspiciously short or unnaturally uniform review lengths suggest automated or incentivized reviews.
The free tier is not a trial. It is the full heuristic engine with no limits. Pro adds AI for users who want deeper analysis.
ReviewShield is the only review analysis tool with fully on-device processing. No servers, no analytics, no tracking. Period.
Every signal runs in your browser. Reviews never touch a server.
No analytics SDKs, no telemetry, no account required.
Pro's AI analysis uses Chrome's built-in Gemini Nano. Your reviews stay local.
Read the full policy at loopheadlabs.com/reviewshield/privacy.
No. Fakespot was acquired by Mozilla and shut down in mid-2025. ReviewShield is a new extension built on Chrome's on-device Gemini Nano AI. Your review data stays local, there is no server round-trip.
Yes. The free tier runs all 7 detection signals (verified purchase rate, timing anomalies, reviewer repetition, rating distribution, language patterns, image analysis, and duplicate text) and gives you a trust grade on every product page.
Pro's deep AI summaries use Chrome's built-in Gemini Nano, which requires Chrome 127+ on a desktop or laptop with at least 22 GB of free storage and 4 GB of video memory. The free signal scan works on any Chrome install.
Chrome extensions are desktop-only today, so ReviewShield runs on Windows, macOS, Linux, and ChromeOS. Mobile support will follow if Chrome for Android opens up extensions.
Amazon.com, Amazon.co.uk, Amazon.ca, Amazon.com.au, Amazon.de, Amazon.fr, Amazon.it, Amazon.es, and Amazon.co.jp. More locales can be added on request.
If you click through to a product from inside ReviewShield's panel, Loophead Labs may earn a small Amazon Associates commission. This never changes the trust grade or what signals fire, and you always see the raw analysis first.
Install ReviewShield free and see the trust grade on your next Amazon search. Pro unlocks whenever you want deeper AI summaries.
Add to Chrome · It's Free