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For colivers and travelers

Who paid what. Split between people. Settled in the fewest transfers.

Rua Augusta 14 is a flat shared by four people and a guest who stays over, with a weekend in Porto paid from a kitty.

In this chapterBalances+Kitty+Events+

Settled in the fewest transfers, trip by trip

Balances that clear everyone in the shortest set of transfers, and every trip kept apart from the others.

The space in depth
The fewest transfers that clear everyone

Four people, twenty-nine expenses, one guest. Who owes whom, and how many transfers does it take to square the flat?

Kitty · Porto weekendeveryone chipped in, Marc holds itOpen
Chipped in€480Left in it€164

Groceries, Fridaypaid from the kitty−96

Petrolpaid from the kitty−58

Dinner at Ramiropaid from the kitty−162

A kitty expense creates no debt: the money was everyone's before it was spent

A kitty for the weekend away

Money everyone chipped in, spent by one person: a kitty expense creates no debt, because the money was everyone's before it was spent.

This flat€1,41029 expenses
Your share€2,347across 2 events
To square it2 transfersthe fewest

Marc Duarteyou are owed 218Lisbon flat · Porto weekendOwes you

Sofia Piresyou owe 64Lisbon flat · Porto weekendYou owe

Rui Costa · guestyou are owed 41Lisbon flat · Porto weekendOwes you

Ana FerreirasettledLisbon flat · Porto weekendSettled

Every trip and every flat, and where you stand across them

Every event you have split money in, and how you stand with each person across all of them.

The assistant

Ask it who owes whom, and settle up at once.

The flat's expenses land from the group chat; the composer settles the month in the fewest transfers.

The assistant in full →

What it takes on

Who owes whom, settled
Every balance in the flat, and the shortest set of transfers that settles everyone up at once.
Receipts from the team
Who is missing which receipt, and a message to them in Telegram that you edit and then send.
What is burning, one list
Overdue invoices, loans and milestones, connections down, payments waiting for a signature for more than a day.

Who does what

Four people, one guest, one book for the flat.

Owner
Opened the group, holds the kitty, and adds the guest by name.
Member
Adds what they paid, sees the group's money and nothing of anyone's own.
Guest
Holds shares and chips in without an account, and claims the row when they join.

Connections

Connected the way a flat already talks.

Expenses are added at the table or in the group chat: a name the bot does not recognise becomes a question, and a photographed receipt comes back as its own lines.

  • Telegram
  • WhatsApp
  • Slack
  • Mail
  • SMS
  • Revolut
  • Wise
  • Plaid

Control and trust

What a flat needs to trust the book.

Nothing of yours
Everyone sees the group's money and nothing of anyone's own space; a personal space stays invisible to the whole flat, always.
Guests
A guest holds shares and chips in without an account; when they join, their row is merged into them.
Fewest transfers
The settle-up is the shortest set of transfers that clears every balance, recomputed on each expense.
The receipt stays
A photographed receipt stays attached to the expense, so the argument is settled by the photo.

Questions

The questions that come first.

Does everyone in the flat need an account?

No. A guest is added by name, holds shares and chips in like anyone else. When they join by invite, their row is merged into their account with every share they held.

Can we add an expense from the group chat?

Yes. In Telegram or WhatsApp, a message like "I paid 32 for the taxi, me, Sofia and Ana were in it" becomes a draft with the split; a name the bot does not recognise becomes a question, never a silent guess, and nothing is written until you confirm.

What happens when someone pays their share?

The person marks the transfer settled, or the payment lands by link and closes the debt itself. A repayment marked by mistake can be undone.

See it on your own books.

Thirty minutes: we connect an account, drop a real bill in, and close a month together.