StackEasy — Smart Card Picker

At checkout, StackEasy shows which of your cards earns the most rewards. Pick your wallet in one minute — no account needed.

Most credit card tools tell you which card earns the most. StackEasy tells you which card you should ACTUALLY use — based on your real balances, APR deadlines, and how each choice affects your score. Earning 3% on a card that's about to exit its 0% APR window, or one sitting at 80% utilization, is a losing trade. StackEasy factors that in. HOW IT WORKS 1. Build your wallet — pick your cards from a large catalog of US credit cards. No account or login required. 2. Shop like normal — when you reach a product or checkout page, the extension detects it on-device and recognizes the merchant's spending category (dining, grocery, travel, gas, and more). 3. Pay with the right card — the side panel ranks your cards for that category and shows what each one earns on this purchase, in dollars. WORKS WITHOUT AN ACCOUNT • Automatic product and checkout detection, all on-device • Best-card ranking by spending category: dining, groceries, travel, gas, streaming, online shopping, and more • Purchase-total-aware reward estimates in dollars • Wallet stored in Chrome storage on your device SMARTER WITH A FREE STACKEASY ACCOUNT (OPTIONAL) • Recommendations based on your real cards via a read-only connection • 0% APR deadline alerts — stop putting spend on a card whose promo window is closing • Utilization warnings — don't push a card past the threshold that dents your score • Payment due date awareness THE PRIVACY PROMISE • All page detection happens on your device. Page contents are never transmitted anywhere. • No affiliate-link injection or link hijacking. We never rewrite links or claim commissions on your purchases. • No browsing-history collection. No analytics in the content script. • Your data is never sold. Account connection is OAuth, read-only, and revocable any time. • The extension never reads, autofills, or intercepts payment forms. Full privacy policy: https://www.stackeasy.ai/extension/privacy/ Built by StackEasy — helping people who manage multiple credit cards use them as one system.