We installed every major coupon extension, tested them on 20+ retailer checkouts, and measured which ones actually found working codes. Here's our honest ranking.
| Extension | Auto-Apply | Price Compare | Privacy | Our Rating |
|---|---|---|---|---|
| PromoIQ | ✅ Yes | ✅ Yes | ✅ No tracking | ⭐ 9.5/10 |
| Honey | ✅ Yes | ❌ No | ❌ Tracks browsing | ⭐ 6/10 |
| Capital One Shopping | ✅ Yes | ✅ Limited | ❌ Tied to Capital One | ⭐ 7/10 |
| Cently | ✅ Yes | ❌ No | ✅ Minimal | ⭐ 7/10 |
| RetailMeNot | ⚠️ Partial | ❌ No | ❌ Tracks browsing | ⭐ 5/10 |
| Karma | ❌ No | ✅ Price drops | ⚠️ Some tracking | ⭐ 6/10 |
| Coupert | ✅ Yes | ❌ No | ⚠️ Data sharing | ⭐ 6.5/10 |
The only extension that combines real-time code verification, cross-retailer price comparison, AND a strict no-tracking policy.
Solid auto-apply with some price comparison, but best features require a Capital One card.
Clean and lightweight with decent auto-apply, but limited retailer coverage.
The most well-known option, but its reputation has declined since the PayPal acquisition.
Cashback + coupons combo, but data practices are questionable.
Best for price drop alerts, but doesn't help you save at checkout.
Large code database but the extension is clunky and unreliable.
We installed each extension in a clean Chrome profile and tested auto-apply on 20 retailers including Amazon, Nike, Target, Walmart, Best Buy, and Sephora. We measured:
If you want the best combination of savings, privacy, and features, PromoIQ is the clear winner in 2026. It's the only extension that verifies codes in real-time, compares prices across retailers, and doesn't track your browsing.
Honey still has brand recognition, but its code quality has dropped significantly since PayPal took over. Capital One Shopping is solid if you're already a Capital One customer.
Join thousands of smart shoppers saving money without sacrificing privacy.
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