Duplicate Charges
Catch double billing before it quietly costs you.
Numero notices when the same merchant appears to have charged you twice for one purchase, with the two receipts side by side.
Bank SMS, Gmail and Outlook. No bank credentials.
Updated
Duplicate charges happen for boring reasons — a payment gateway retried, an app double-tapped, a system reconciliation went sideways. The amount is usually small enough that you don't notice, and by the time you do, the return window has closed.
Numero compares receipts from the same merchant for suspicious patterns — same amount, same day, same product — and surfaces the two receipts side by side so you can decide in seconds.
How it works
Three steps, then Numero does the rest.
STEP 01
Connect Gmail read-only
Read-only Google sign-in. Numero cannot send or modify email.
STEP 02
Numero compares receipts as they arrive
Each new receipt is compared against recent ones from the same merchant. Suspicious pairs are flagged, never silently merged.
STEP 03
You review the pair and decide
"Possible duplicate charge — same amount, same merchant, same day" shows both receipts side by side.
What Numero catches
Every moment worth knowing.
Numero surfaces only what deserves your attention right now, with a reason attached.
Duplicate charge
The same merchant appears to have charged twice for one purchase.
Unexpected charge
A charge appeared from a merchant with no recent activity from you.
Refund still pending
A return was accepted but the refund has not landed within the merchant's stated window.
Price quietly went up
A recurring charge increased more than usual — surfaced before it becomes the new normal.
Subscription renewed
A recurring charge just went through — with the exact amount and what changed since the last cycle.
Free trial ending soon
A trial converts to a paid plan in the next few days — flagged before the first real charge.
Continue exploring
Guides and connected workflows.
Read-only. Metadata only. Never sold.
Bank SMS are read on your phone and Gmail and Outlook access is read-only. SMS text, email bodies and attachments are never stored. You control export and deletion.
Also useful
Numero does more than one thing.
Find paid subscriptions hiding in your email.
Turn receipts, renewal notices, trial messages, and price changes from authorized Gmail and Outlook accounts into connected recurring-cost evidence.
Keep every purchase refund tied to its evidence.
Connect the purchase, return, merchant timing, refund reference, and source messages into one case without confusing initiation with settlement.
Track every invoice from your inbox.
Turn authorized Gmail and Outlook invoices into searchable Financial Memory with amounts, due dates, references, confidence, and source provenance.
Frequently asked
Answers before you sign up.
Numero uses conservative same-merchant, same-amount, same-window matching and flags as Possible Duplicate — not Confirmed. You confirm or dismiss. Accuracy comes before apparent completeness.
Not today. Numero surfaces the pair and links to the original receipts so you have everything ready. Autonomous outreach is a planned capability.
Two different items from the same merchant on the same day aren't flagged — the amount and product both need to match. Dismissed pairs are remembered.
Recurring subscription renewals are handled separately (see Subscription Tracker) — the monthly cadence isn't a duplicate.