Real time
One bill, live on every phone
Our ski weekend had six people, three cars and one cabin. By Sunday the costs lived in a spreadsheet, two screenshots and Marco's notes app.
Nobody knew which one was right, and every gas stop made them all a little more wrong.

This time Ana made one bill in The One Bill and sent the link to the group chat. Everyone opened it on their own phone and saw the same bill, live.
Friends added what they paid without creating an account. Only Ana needed one, and she chose who could edit and who could only view.
When Marco paid for the last tank of gas, the whole group saw it a second later. No more screenshots.