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Smart Score on Amazon, Walmart, Target & Best Buy. Search badges, 60-day price history sparklines, and trusted alternatives. GoBuy adds an independent AI trust panel to every Amazon, Walmart, Target, Best Buy product page so you know exactly what you're buying — before you tap "Add to Cart." Stop guessing whether a product is worth buying. GoBuy shows you an independent Smart Score on every product page — powered by Bayesian review analysis and Wilson confidence intervals, so no retailer's marketing team can game it. Works on all 4 major retailers: Amazon (US, UK, CA, DE, FR, JP, AU) Walmart Target Best Buy What you get on every product page: • Smart Score (0–100) — mathematically rigorous trust rating • Trust summary — why the product scored the way it did • Return risk badge — flags high-return-rate products • 60-day price history sparkline — spot price spikes before you buy • Better alternatives — higher-scored options at similar prices What you get on search pages: • Inline Smart Score badges next to every result — compare at a glance without clicking through Why GoBuy? One independent standard across all retailers. No sponsored placements. No affiliate bias. Just the score — so the best product wins, not the biggest ad budget. No setup. No account required. Install and browse as normal. WHAT MAKES IT DIFFERENT ──────────────────────── Most tools just surface raw review counts. GoBuy uses a Wilson confidence interval to weight statistical significance, a Bayesian Beta model for verified-purchase share, compound penalty scoring for suspicious review patterns, and an AI fingerprint detector to flag template-written or AI-generated reviews. The methodology is fully published at gobuy.ai/methodology — not a black box. PRIVACY FIRST ───────────── GoBuy only activates on product pages. It does not track your browsing history, sell your data, or share information with advertisers. Full privacy policy: https://gobuy.ai/privacy PERMISSIONS USED ──────────────── • Cookies — checks whether you're signed in to gobuy.ai to enable wishlist tracking (never reads Amazon cookies) Developed by the GoBuy team · https://gobuy.ai Open methodology: https://gobuy.ai/methodology