It started with a notebook and an argument.

A transport crew shared rides and split fuel every month. The numbers lived in a notebook, then a spreadsheet, then a group chat — and every month somebody remembered a payment differently.

Levio is the fix: one ledger everybody can see, with balances that carry over correctly, deductions each group defines for itself, and a record of who changed what. No shared admin PIN, no mystery numbers.

It now runs for church groups, savings circles, office pools and crews. If your group pools money, the shape fits.