Best AI Expense Tracker Apps in 2026
How today's AI expense tracker apps actually get your data — inbox, bank connection, or manual entry — compared side by side, including where Numero fits.
Quick answer
The apps below split into three groups by how they actually get your data: reading email (no bank login), linking a bank or card (broader automatic capture, a credential handed over), or manual/conversational entry (no connection at all, but nothing captured unless you say so). That split determines what each one can and can't do — more than any feature list does.
How we chose and compared these
Every app below is a real, currently available product, grouped by how it actually gets your transaction data rather than by marketing category. Three criteria decided what made the list and how it was described:
- Currently shipping and publicly available — no beta waitlists or discontinued apps.
- AI plays a real role in how the app captures or reads a transaction, not just in a chat add-on bolted onto manual entry.
- Described only by its publicly stated mechanism and positioning — no invented feature claims about a product we haven't operated ourselves.
Numero's own entry is held to the same rule as every other row: only what's true of the product today, not what's planned.
The comparison
| App | Best for | Mechanism | Bank login |
|---|---|---|---|
| Numero | Purchases, bills, subscriptions, and refunds read from Gmail or Outlook | AI-primary extraction, validated by a deterministic rules layer on every field | Not required |
| ExpenseBot | Scanning years of Gmail receipts into a spreadsheet you own | Automated Gmail receipt scan into Google Sheets | Not required |
| SparkReceipt | Receipt and invoice capture from any email account | AI extraction of vendor, amount, date, tax, and currency from incoming email | Not required |
| WellyBox | Bookkeeping-oriented expense finding across email and suppliers | Scans both email and connected supplier accounts | Not required |
| Copilot Money | Full automatic capture across every linked bank and card account | Bank/card sync with a learned auto-categorization engine | Required |
| Rolly | Logging a purchase the moment it happens, by chat | Natural-language message parsing (e.g. “18 on lunch”) | Not required |
| MonAi | Speaking or typing an expense instead of filling a form | Voice/text parsing, plus Apple Pay and Shortcuts automations | Not required |
| ReSubs | Subscription tracking specifically, without a bank connection | Manual entry, CSV import, or Gmail receipt scan | Not required |
Inbox-based: read receipts and bills from email, no bank login
Numero reads receipts, bills, subscription renewals, and refund confirmations from a connected Gmail or Outlook inbox, using read-only mail permission only — never a bank or card login. AI does the initial reading of each message, but a deterministic rules layer independently validates every field before anything is stored, and takes over automatically if the AI step is unavailable or produces something implausible.
ExpenseBot and SparkReceiptwork from the same starting point — email — with a different focus: ExpenseBot scans years of Gmail receipts into a Google Sheet you own; SparkReceipt connects to Gmail, Outlook, or any IMAP account and extracts vendor, amount, date, tax, and currency from each incoming receipt. WellyBox extends the same idea toward bookkeeping, pulling expenses from both email and connected supplier accounts.
Bank-linked: broader automatic capture, in exchange for a bank connection
Copilot Moneyconnects directly to your bank and card accounts and builds its reputation on a strong automatic-categorization engine that improves as you correct it. This is the trade-off a bank connection buys: transactions are captured the moment they post, across every linked account, without needing an email trail — at the cost of handing over financial-institution credentials, typically through a third-party aggregator.
Manual and conversational: no connection required, at the cost of active input
Rolly and MonAirepresent a third mechanism entirely: you tell the app about a purchase — by typing a short message, speaking, or (for MonAi) through Apple Pay/Shortcuts automations — and it parses that into a structured expense. No inbox or bank connection is required, but nothing gets captured unless you say something. ReSubs takes a related no-bank-connection approach specifically for subscriptions: manual entry, CSV import, or a Gmail receipt scan, deliberately never a bank link.
Which one should you actually use?
The honest answer depends on what you're optimizing for — here's the short version.
Want zero bank connection
Numero, SparkReceipt, or ExpenseBot — all read from email instead of a bank feed.
Want every card/bank transaction captured
Copilot Money — broader automatic coverage, at the cost of a bank login.
Want to log spending by talking or typing
Rolly or MonAi — no connection at all, but you have to say something each time.
Want proactive alerts, not just a ledger
Numero — recurring-cost, return-deadline, and invoice reminders happen without you checking in.
Where Numero fits
Numero is free to start: one connected inbox (Gmail or Outlook), 30 days of history, unlimited deterministic search, a Timeline, and a daily Briefing of what deserves attention. Paid plans add a longer history window, more connected inboxes, full Moment Detail pages, and — in the mobile app — AI-based receipt photo capture for the purchases that don't arrive by email.
What's automatic today, plainly stated
Numero reliably automates four things end to end: recurring/subscription cost summaries, return-window-closing reminders, and invoice due/overdue reminders. Evidence for warranties, insurance, travel bookings, and duplicate charges is organized and searchable, but automatic proactive alerting for those is still being built, not a current guarantee — worth saying plainly here, the same way any other row in this comparison should be held to what it actually does today.
Questions about best AI expense tracker apps
What they need from you, and what they can see. A bank-linked tracker needs your bank or card login (usually via a third-party aggregator) and then sees every transaction that posts to that account automatically. An inbox-based tracker needs only read-only mail permission and sees only purchases that produce an email — it never sees a cash payment or an in-person card purchase with no emailed receipt.
It can be, for the transactions you remember to log — there's no extraction step to get wrong when you're stating the amount yourself. The trade-off is coverage: nothing gets captured unless you actively enter it, unlike an inbox- or bank-linked tracker that captures evidence in the background.
Yes — manual/chat entry (Rolly, MonAi, and Numero's own free "Quick Add") requires no inbox or bank connection at all. You're trading automatic capture for zero connected accounts.
Because the data source determines the features that follow. An app can't detect a duplicate bank charge without a bank connection, and it can't read a subscription renewal receipt without inbox access — the mechanism sets the ceiling on what any feature list can honestly promise.
Depends on the app's free tier specifically, not the category. Numero's free plan includes one connected inbox, 30 days of history, unlimited deterministic search, and a daily Briefing — a real, ongoing product tier rather than a time-limited trial, though paid plans unlock more history and inboxes.
Nothing stops you, but most people don't in practice — an inbox-based tracker and a bank-linked one would show overlapping purchases from two different angles. A more common pairing is an inbox-based tracker for receipts and subscriptions plus a chat-based app for cash spending, since those two cover genuinely different gaps.
See the full picture of what Numero automates today.
No bank login, read-only Gmail and Outlook access, and a clear line between what's shipped and what's still planned.