A ledger for complicated money
Know the money facts before they happen.
Every morning I open one screen and read three numbers: how many days of cash I have, what I am really worth, and what is due. Thirty seconds, across 66 accounts at 18 institutions in four currencies on three continents. Then I close it.
I spent ten years and four apps looking for that screen. In the end I had to build it. Give me three minutes and I’ll show you what it does.
7 days free, then $12.99 a month or $89.99 a year. Card required, cancel anytime before your first payment.
Free trial for first-time customers; if your organization has subscribed before, the paid plan starts at checkout. Renews automatically until you cancel in Settings. Taxes may apply.
I run 66 accounts at 18 institutions in four currencies on three continents. Thirty-six of them are credit cards, and yes, I know. For ten years my old app synced them all and then filed my $13,878 card payment, paid from my own checking account, as an expense in some account it had nothing to do with. Every month. I spent fifteen hours a month fixing mistakes like that, and I dreaded opening the thing. Somewhere in year nine I realized I had become its unpaid bookkeeper, and it still couldn’t answer a simple question about my own money. So I built the app that could.
7 days free, then $12.99 a month or $89.99 a year. Card required, cancel anytime before your first payment.
Free trial for first-time customers; if your organization has subscribed before, the paid plan starts at checkout. Renews automatically until you cancel in Settings. Taxes may apply.
My own ledger, September 2026
- live accounts
- 66
- live bank connections
- 20
- institutions on three continents
- 18
- currencies, one net worth
- 4
- credit cards
- 36
- internal transfer pairs caught
- 97
- transactions, back to May 2012
- 5,410
- receipts on file
- 1,017
- recurring payments tracked
- 54
A transfer is not a purchase.
Pay a card from checking and most apps put you on a $13,878 shopping spree. Quaestor pairs the debit with the credit and files the pair where it belongs: out of your spending, out of your burn rate, out of every report downstream. It has caught 97 of mine so far.
- Matched by amount, date and account, then kept out of spending and burn rate.
- Savings moves, card payments and brokerage funding count as transfers, not shopping.
- Flagged something that isn’t one? One click says so. Nothing is deleted.
Euros are not dollars.
Every account keeps its own currency. Your net worth is in the one you think in, converted at live rates, and last year’s report does not rewrite itself when the rate moves. Four currencies roll into one number on my dashboard every morning, and I have not done the arithmetic myself since.
- 153 currencies, live rates between them, one main currency you pick once in Settings.
- Past periods keep the rates they were recorded at. Last March stays last March.
- A transfer between currencies still matches, on the converted amount.
See where it went, on whatever screen you have.
Income on the left, accounts in the middle, where it actually went on the right, with internal transfers and loan payments pulled into lanes of their own so a card payment never masquerades as a category. It lives in a browser: the work laptop, your phone, an airport lounge. No Mac required. No file to sync.
- Sixty days of inflow, outflow and net, by account and by category.
- Internal transfers and loan payments get lanes of their own, never a spending category.
- Any browser on any device, the locked-down work laptop included.
My 60-day money flow on a laptop and on a phone: inflow sources on the left, accounts in the middle, outflow categories on the right, internal transfers in a lane of their own. Same ledger, same numbers, nothing to install.
Names, institutions, currencies and balances shown are illustrative.
Ask. Don’t export.
“What did I really spend on restaurants last quarter, transfers excluded?” Ask your ledger. The answer comes from your own transactions, receipts and accounts, read-only and scoped to you, not from a CSV you built at eleven at night. A relative says I cross-examine money like a witness on the stand. Guilty. This is that cross-examination on demand.
- Answers come from your transactions, receipts and accounts, nothing else.
- Read-only. It can tell you about your money. It cannot touch it.
- We never train AI on your financial data.
Your ledger writes to you.
Every week, the completed week and the outlook, in your inbox before you think to look. The Cash Outlook inside it is frozen at send time, so what you read on Monday is what was true on Monday.
- The completed week: what came in, what went out, what it was for.
- The outlook, with the same assumptions the dashboard shows.
- Sent on your schedule, in your time zone. One click to unsubscribe.
The rest of it, briefly
Receipts become records: snap one and Quaestor reads the merchant, the line items, the tax, the tip, the total and the currency, then looks for the transaction it belongs to. I have 1,017 on file. Live sync covers 12,000-plus institutions in the United States and Canada through Plaid, read-only; everything else comes in by CSV or QIF with a mapping review, and my own ledger goes back to May 2012 that way, so yes, it holds history. And Cash Outlook, the panel at the top of this page, reads your real history and tells you how many days of liquid cash you have, as a range, with its assumptions written down, while you can still do something about it.
Read-only means read-only.
We can see your balances. We cannot touch them. Same goes for our AI. That is not a limitation. That is the design. Bank connections go through Plaid’s hosted flow, so we never see a bank password; the card you pay with lives at Stripe. We are paid by subscriptions and nothing else: no ads, no selling data, no commissions. We do not train AI on your financial data. Ever.
The short version is on the Security page. The long version is the Privacy Policy, and it says the same thing.
Why it’s called Quaestor
A quaestor was the Roman magistrate who kept the treasury. The name means money with accountability and authority in the same hands, and I chose it for a reason: authority without accountability is corruption. That applies to software too. Any app that can move your money has authority. Quaestor can read your money. It cannot touch it. And it answers for every number it shows you.
The longer version, with the ten years that led here, is on the About page.
What it costs
7 days free, then $12.99 a month or $89.99 a year. Less than one overdraft fee, or about 25 cents a day. Card required, cancel anytime before your first payment.
Go deeper on any of it.
Seven things the ledger does, each on its own page.
Automatic transfer detection
Both legs of every transfer, matched and kept out of your spending.
Read moreMulti-currency net worth
Every account in its own currency, one net worth in yours.
Read moreCash Outlook & runway
How many days of cash you have, as a range, with the assumptions written down.
Read moreAI chat assistant
Ask your ledger a question. It answers from your data and nothing else.
Read moreBriefings & Notifications
The completed week and the outlook, in your inbox before you think to look.
Read moreReceipt matching
Snap a receipt. It becomes a record and looks for the transaction it belongs to.
Read moreBank sync & import
12,000-plus institutions through Plaid, read-only. Everything else by CSV or QIF.
Read more
Leaving another app?
Start at the door with your old app’s name on it. The same ledger is behind every one.
Your spending report gets honest the first morning.
7 days free, then $12.99 a month or $89.99 a year. Card required, cancel anytime before your first payment.
Free trial for first-time customers; if your organization has subscribed before, the paid plan starts at checkout. Renews automatically until you cancel in Settings. Taxes may apply.


