Accounts that hold more than one currency.
Bank, cash or crypto — each account holds every currency you enable on it side by side, with its own balance for each one.
Every account keeps its own currency — see your euros, dollars and crypto exactly as they are, not blended into one misleading total.
Connect Claude, ChatGPT or another assistant with remote MCP connectors to your ledger. It answers from your real figures, and it keeps the ledger up to date for you.
How much did we spend on food in August?
You spent €412.30 on Food in August, across 18 movements.
And compared to July?
That is €44.20 more than in July, which came to €368.10.
Paste one address into Claude or ChatGPT and sign in. No API keys, nothing to install.
It sees the teams you belong to and can do what your role allows there, nothing more.
What it writes shows up in the activity log, marked as the assistant's work.
Cut its access from your account settings and it stops at once.
Included in every plan, Free too. Each plan's limits apply.
Not a spreadsheet with a nicer skin. Accounts that speak several currencies, a ledger everyone writes to, and every rate kept exactly as it was.
Bank, cash or crypto — each account holds every currency you enable on it side by side, with its own balance for each one.
Invite whoever shares money with you by email. Everyone writes to the same ledger and sees who recorded what.
Every movement is filed under one category you never had to design, and tagged the way you actually think about it: rent, the trip, the dog.
Every transaction stores the exchange rate of the day it happened, synced daily. Months later it still reads true.
Filter by account, currency, tag or date — or just search. The list keeps loading as you scroll.
Remove a transaction and the balance goes back exactly where it was. No manual fixing afterwards.
Set a monthly amount per category or tag, in each currency, and watch what is left as the month goes.
There is nothing to set up, no chart of accounts to learn and no categories to design: the short list comes with the ledger. You write down money as it moves and the ledger keeps the rest.
The bank, the cash at home, the crypto wallet. Turn on the currencies each one holds and it keeps a balance for every one of them.
Amount first, then the account. The date, the note and the tags are one tap away, and the rate of that day is saved with it.
At the end of the month you see what entered, what left, and where it went by tag, in each currency on its own.
Every currency, every movement and every tag is free and unlimited on both plans. Pro is for when you need more accounts, more people or your whole history.
A complete ledger for you and one other person, AI assistant included.
$0/month
Free forever
No card, now or later.
No limits on accounts, people, teams or history.
$2.50/month
Billed $29.99 a year
You start free and move to Pro from inside the app, whenever you want.
Feature | Free | Pro |
---|---|---|
Accounts per team | 3 | Unlimited |
Members per team | 2 | Unlimited |
Free teams per user | 1 | Unlimited |
Months of history | 6 | Unlimited |
Member roles | Not included | Included |
Budgets | Not included | Included |
Recurring transactions | Not included | Included |
Activity log | Not included | Included |
AI assistant access (MCP) | Included | Included |
Contamos is being built in the open. New features ship often, and this page always says what the app does today, not what it might do later.