Betfair Split

There is a particular kind of friction that creeps into every shared life. The dinner where one person picks up the bill and three others say "I'll Venmo you." The trip where you take turns paying for petrol, taxis, hotels, snacks. The flat where rent is easy but the gas bill, the cleaning supplies, the streaming subscription and the broken kettle all need to be added up at some point. Bitfair Split exists to take all of that, gather it in one place, and tell you exactly who owes what, to whom, and in what amount — so the bigger question of whether to settle up tonight or next week becomes the only one left to discuss.

The idea is simple. You create a group for any context where you regularly share expenses with the same set of people — a holiday, a household, a recurring dinner, a side project, a family. You add the people in that group, just with their first name. You drop in the expenses as they happen, with a quick description, the amount, the date, who paid, what kind of expense it was, and optionally a note. The app keeps a running ledger in the background and works out the rest.

When you check the Balances tab, you do not see a confusing matrix of who owes whom and how much. You see a clean, simplified set of payments — the smallest possible number of transfers that would settle the entire group. If three friends shared a trip and the math works out to "Anna owes Marco eighty euros, that is it", the app says exactly that. If someone has paid you back already, you mark the settlement and the relevant lines disappear. The screen always tells you the truth as it stands right now.

The expense splitting itself is flexible enough to match real life. Most of the time you will split a bill equally between the people who shared it — the app does that with one tap and handles the rounding correctly so the cents always add up. But some expenses are not equal. One person did not eat the appetiser, another covered three nights of the hotel while you covered one, the rent is split 60/40 by room size. Bitfair Split lets you switch to exact amounts or percentages on any expense, mark the people involved, and the totals stay consistent across the whole group.

Currencies live at the group level, so a holiday in Japan tracked in yen will never get confused with the flat-share back home tracked in euros. Categories let you filter at a glance: was it food, transport, accommodation, utilities, entertainment, or something else? Notes are there for the awkward bits — "Anna paid in cash but Marco paid her back already on the day, this is the receipt for the rest" — that no spreadsheet would have a column for.

Day-to-day, the interface is built to be invisible. Four tabs — Groups, Expenses, Balances, Settings — and a single floating button that always means "add the thing this screen is about". The typography is bold and high-contrast so you can read it standing at the cashier with the sun behind you. The colours pick up automatically from your device's light or dark setting, or you can pin one in Settings if you prefer. There is no learning curve and there is no onboarding tutorial that wastes your time on the third launch.

What there is not, by deliberate choice, is the rest. There is no account to create. There is no e-mail to confirm. There is no password to remember, no two-factor code to enter, no cloud sync to subscribe to, no invitation flow that requires your friends to install anything before you can start tracking. The network permission is not just unused — it is not even declared in the app's manifest, which means the app physically cannot make an outgoing request even if some future bug tried to. Every name, every euro and every receipt note lives in a private database on your device. Nothing is sold. Nothing is shared. Nothing is analysed.