Stackeasy — Smart Card Pi

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.