What are you buying?
Paste a product link or describe the purchase. CardPerks checks your wallet and tells you which card to pull out.
Full comparison
Start with your wallet
Add the cards you actually carry, then search any purchase to see the winner.
My wallet
Pick every card you carry. Your wallet is saved on this device only — nothing is uploaded.
Settings
Tune how CardPerks values your points. Everything here is stored locally.
Point values
How many cents you think one point or mile is worth. Lower these if you only redeem for cash back.
Your data
CardPerks keeps your wallet and settings in this browser. There is no account and no server-side storage.
About the numbers
Earn rates, credits and protections are summarised from public issuer information and change often. Treat CardPerks as a starting point, not financial advice — confirm terms with your issuer before you buy.