Know which card earns the most, before you tap it.
Cardful sees the store you're on and names the card that earns the most, in real dollars.
How it scores a purchase
Up to three things pay you on one purchase, and they stack. Cardful adds them up and picks the card with the biggest total.
A shopping portal
A portal like Rakuten shares the store's commission with you. It only counts if you click through before checkout.
A credit card offer
Your bank's offers pay a statement credit, but only on the card the offer is on, so they can change the winner.
Your card's own rate
Points converted to dollars at a published, dated value.
One total
The per-dollar rates, added. A flat reward with a minimum spend sits beside the total, not inside it.
Three ways to get the answer
Click the icon, or wait for checkout
Click Cardful in your toolbar on any of 2,756 recognized stores and it names the best card there. At checkout it appears on its own.
Search a store
Look up 2,756 merchants by name, each with its own bonuses, network rules and traps.
Fix it once
Correct a wrong guess and it stays fixed for that site.
Works for couples
Their cards count too
Add your partner's cards and they're ranked with yours, labelled by owner: "Sam's Gold Card". They don't need an account.
See each other's offers
Invite them by email. Once they accept, you both see each other's offers at checkout.
One Pro covers both
One subscription does the offer work for both of you. Only cards and offers are shared, and either of you can stop sharing anytime.
Why dollars, not multipliers
"4x points" means nothing until you know what a point is worth. Cardful converts every rate to dollars first. Redeem differently? Set your own values.
Which card for…
Private by default
Nothing leaves the browser
Your wallet stays in Chrome's local storage. The extension has no analytics or tracking. (This website counts page views, without cookies.)
Sync, under your account
Your cards and point values follow you to cardful.xyz and your other browsers, and your offers do too with Pro. Only your account can read them, plus a partner if you share with one.
Site corrections
When you tell Cardful what a site sells, that correction never leaves the device.
Free or Pro
Which card to use is always free. Pro does the offer work for you.
Free
The best card for every purchase, and one card’s offers.
- Which card to use, at every store in real dollars, at a published, dated point value
- The checkout overlay
- Unlimited cards
- Rotating categories tracked last quarter’s picks don’t count
- Merchant traps flagged Target and Walmart don’t earn grocery bonuses
- The cheat sheet, printable
- Your own point values
- Shopping-portal rates, stacked with your card
- One card’s offers scanned and added for you
Pro
Cardful finds your banks’ offers and adds them for you.
- Everything in Free
- Offer scanning on every card reads every offer on your bank’s offers page
- Add every offer in one run Chase and American Express cards, for now
- Add new offers at sign-in Chase and American Express, asks once a day
- Your offers on cardful.xyz and every browser sorted by expiry
- Expiry reminders one heads-up before an offer ends
- One Pro for two covers you and your partner
Free for 30 days, then $2.99 a month. Cancel before then and you pay nothing.
Pro is tied to your email. Sign in with it anywhere and Pro is on.
Stop doing this math at the register.
Free, and it ranks your whole wallet in seconds.