CardStack: Best Card Extension

Auto-add credit card offers and see the best card to use on any site while you shop online.

CardStack helps you get more value from your credit cards while you shop online.

It recommends the best card to use for a purchase based on rewards, bonus categories, credits, and available savings opportunities, so you can stop guessing and start earning more.

No more missed savings. No more forgotten credits. No more leaving rewards on the table.

FEATURES

Use the best card every time
CardStack analyzes your cards and shows which one gives you the best return for the purchase in front of you.

Surface savings automatically
See available savings opportunities across your cards while you shop.

Track credits and card benefits
Monitor statement credits, perks, and annual fee value so you know which cards are actually worth keeping.

Maximize rewards
Earn more points, miles, and cash back across your credit cards.

Fast and simple
CardStack is built for clarity and speed, so you can make the right decision in seconds.

Privacy first
CardStack does not store your full card numbers and does not sell your data.

Install CardStack and get more value from every card in your wallet.

Disclaimer: CardStack is an independent tool and is not affiliated with, endorsed by, or sponsored by American Express, Chase, or any other financial institution. All trademarks are the property of their respective owners.