The spreadsheet was never going to keep up
A card tracker only helps if it's current. Spreadsheets and inbox searches depend on you remembering to update them — which is exactly when they fail.
Most people start the same way: a spreadsheet with a row per subscription, or a habit of searching the inbox for “receipt” when something looks off. It works for a week. Then a payment slips through unlogged, a free trial converts unnoticed, and the sheet quietly drifts out of date.
The problem isn't discipline — it's that manual tracking asks you to do the work at the exact moment you're focused on something else (checking out). CardIndexer flips that: it notices the payment for you, asks (or auto-saves) which card and whether it's recurring, and keeps a live index you never have to maintain.
Where manual tracking falls short
| How you track cards today | CardIndexer | Spreadsheet | Email search |
|---|---|---|---|
| Captures the card automatically at checkout | |||
| Tells subscriptions from one-off purchases | |||
| Alerts before a card expires or renews | |||
| Shows which sites have your card saved | |||
| Card-reissue / offboarding checklist | |||
| Multiple users, roles & audit log | |||
| No manual data entry | |||
| Never stores full card numbers |
And it's safer, too
A spreadsheet tempts you to paste in card details “just to be thorough.” Now that data lives in a file synced across devices and shared links. CardIndexer never stores a full number — only a label, brand, last 4, and expiry — so there's nothing sensitive to lose in the first place.
Retire the spreadsheet
Add the extension and let CardIndexer keep your card index current — automatically.