SPEND SMARTER
Which card NOW?
Always know which card to swipe — no bank linking, no accounts, no homework.
Takes about 30 seconds.
CardlySPEND SMARTER
Which card NOW?
BEST FOR GROCERIES
Amex Blue Cash Preferred
American Express
Always-on 6% · U.S. supermarkets (excl. Costco, Target, Walmart)
HOW IT WORKS
Three taps, max.
Add the cards you carry
Search 20+ popular cashback cards or add a custom one. No issuer logins.
Tap a spending category
Groceries, gas, dining, travel… or type something like "Costco" or "Netflix".
Get the answer instantly
See your best card, the exact rate, caps, and any activations you need to do.
WHY CARDLY
Cashback math, done for you.
Add the cards you carry
Rotating 5%, fixed categories, flat rate — we speak all of them.
Tap a category, get the answer
Groceries? Travel? Gas? One tap shows your best card and exact rate.
Quarterly rotations, handled
Categories change every quarter. Cardly keeps up — no research needed.
Nothing leaves your browser
No logins. No bank linking. No accounts. Your data stays yours.
FAQ
Questions, briefly answered.
Does Cardly know my account balances?
No. There is no bank linking, no login, no transaction syncing. You tell Cardly which cards you carry — that's it.
Where is my data stored?
In your browser's local storage. If you sign in, your data is backed up locally so it survives sign-out. Clear your browser data and Cardly forgets everything.
Which cards are supported?
Chase, Discover, Amex, Citi, Capital One, BofA, U.S. Bank, Wells Fargo, Huntington, and more. You can also add custom cards for credit-union or store cards we don't list.
How do quarterly bonus categories stay current?
A small, hosted JSON file ships the latest rotating categories. Cardly fetches it on launch so the answer always reflects this quarter.
GET THE APP
Cardly in your pocket.
Scan the code below to download Cardly on Android. Same wallet, same answers — anywhere you swipe.
Tap-to-pay reminder
Quick Settings tile to pull up your best card mid-checkout.
Quarterly nudges
A gentle notification before rotating-category activation deadlines.
Offline-ready
Your wallet works on the subway, on a plane, anywhere.
Ready to stop overthinking checkout?
Open the app. Add the cards in your wallet. Done in 30 seconds.
Get Started