Your sample wallet
0/5
Pick 1 or more cards to build your sample wallet.
Early access beta • App Store listing coming soon
NanFlo helps you
Use the right card.
See which card wins at checkout. Track the $300 travel credit before it expires. Know if your paid cards are actually earning their keep.
Try NanFlo instantly
Build a sample wallet and run a search before you sign in.
Choose a few recognizable cards, search for a purchase, and see how NanFlo recommends a card using template-level rules only.
Best card right now
Build a sample wallet, then run a search.
Pick up to five cards and search for a purchase to see how NanFlo explains the winner.
What NanFlo helps answer
Using the wrong card at checkout?
- Type any merchant or category — NanFlo ranks every card in your wallet for that purchase
- See the winning card, its earn rate, and exactly how much more it returns than the next best option
- Add a purchase amount for a precise dollar estimate, or skip it for a quick category match
- Ranked alternatives are a tap away if you want to see the full comparison
- Nearby merchant detection surfaces a recommendation automatically when you are at a store
- Get a push notification with the best card at the moment of checkout — without opening the app
- Place the widget on your home screen for a one-tap lookup before you pay
Privacy & security
NanFlo can read your transactions. It cannot touch your money.
The connection goes through Plaid — the same infrastructure used by Venmo, Robinhood, and thousands of other financial apps.
Your login never leaves your bank
Connection goes through Plaid. Your bank credentials stay between you and your bank — NanFlo receives a secure access token, not your username or password.
Read-only. Always.
NanFlo can read your transactions and balances. It cannot move money, initiate payments, or make any changes to your accounts — ever.
Disconnect or delete in one tap
Remove any linked account from within the app at any time. Your data is deleted immediately and completely — not archived.
Your data is not the product
NanFlo does not sell your data, share it with advertisers, or use it for cross-app targeting. The business model is a subscription, not your information.
FAQ
Things worth knowing before you sign up.
Is this really free to try?
Yes. The preview on this page requires no account. The full web app also has a free tier — you can link cards and see recommendations without a subscription.
How is this different from a cashback comparison site?
Comparison sites show which card theoretically earns the most in a category. NanFlo uses your actual wallet, your real transaction history, and your specific perks to give you the answer for your situation right now — not the average cardholder.
Does NanFlo work with any credit card?
NanFlo supports most major US credit cards — Amex, Chase, Citi, Capital One, Discover, and more. The card catalog is updated regularly. If a card you hold is not yet in the catalog, you can still get category-based recommendations and request it be added.
Is there a mobile app?
NanFlo is a web app that works on any browser, including mobile. A native iOS app is in active development and will be available on the App Store soon.
How does pricing work?
The preview on this page is free with no account required. The full app has a free tier that includes card linking and recommendations. A paid plan unlocks spend insights, perk tracking, goal setting, and card strategy tools.
Does NanFlo work outside the US?
Not yet. NanFlo currently supports US-issued credit cards and US bank connections through Plaid. International card support is on the roadmap.