Credits expiring, wrong card at checkout, perks you forgot about. Cardzen catches all of it.
Earn that free flight faster
The right card at every purchase adds up quick.
Earn that free flight faster
The right card at every purchase adds up quick.
Build toward that hotel stay
More points per dollar when you use the right card.
Keep every credit you paid for
Every credit tracked before it expires.
Compare rewards, track credits and benefits, and get answers about the cards you already carry.
At checkout
Cardzen compares the cards you already carry and names one winner. The runners-up stay visible, so the choice is never a mystery.
Before the month ends
Cardzen keeps each credit visible until you use it. No spreadsheet required.
Chase Sapphire Reserve
Visa
American Express Gold
American Express
Capital One Venture X
Visa
Citi Double Cash
Mastercard
Add the cards you carry. Cardzen loads supported rewards and benefits so you can inspect your wallet and ask what fits next.
Ask about a store, category, or purchase. Cardzen compares supported information across the cards in your wallet and recommends a card to consider.
CardzennowYour $15 dining credit expires tomorrow.
Track supported credits and benefits, see what is unused or nearing a deadline, and get notifications on your phone. Keep the important parts of your wallet in view.
Each day, Cardzen surfaces what matters most: a credit about to expire, a bonus category that just started, or a benefit you didn't know your card had. No digging, no dashboards. Clear insights, delivered daily.
Your Freedom Flex just started earning 5x at restaurants this quarter. Time to eat well.
Add the cards you carry. No full card numbers or bank connection required.
Cardzen doesn't collect full card numbers, CVVs, bank account numbers, or bank login credentials.
Start manually, and keep any future connection optional.
We never sell your personal financial details or share identifiable data with advertisers.
Delete your account and all your data is permanently removed. No hoops, no dark patterns.
“Between shipping AI agents and working nonstop in SF, I never had time to track which credits were expiring. Cardzen caught $120 in Amex credits in my first week, and now just tells me which card to use at checkout.”
Bhargav Y.AI Payments Enthusiast“I have five cards and used to track them in a spreadsheet. That fell apart in two weeks. Cardzen just keeps everything straight for me.”
Candice D.Casual cardholderConnect your Cardzen account to ChatGPT, Claude, or another compatible assistant through Cardzen's secure MCP server. Setup guides
Start free. Add your cards. Get your next useful answer.
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