Download
Add CardIndexer to your browser
The extension does the watching so you don't have to. Install it, add a card by label, and it captures the rest as you shop.
CardIndexer

Getting started
Three steps, about two minutes
Install the extension
Add CardIndexer from the Chrome Web Store — it's free.
Add your cards
Enter a label, brand and last 4 for each card. No full numbers.
Shop as usual
CardIndexer detects payments and organises them in your dashboard.
Firefox and Edge support are on the roadmap. Prefer mobile? The dashboard installs as an app from your phone's browser.
Start tracking your cards in two minutes
Add the extension, make a purchase, and watch it organise itself. Free to start — no credit card.