Trimtab keeps track of shared money — a sailing week with friends, a flat share, or a boat and a plane owned together. Log who paid what, split it equally or by ownership share, and see exactly who owes whom.
No accounts, no ads, no setup. Create a group, add the people, start adding expenses.
A holiday, a household, a boat, a plane. Each group has its own people, its own currency and its own history.
Split a restaurant bill evenly, or divide the mooring fee by ownership: a 50% owner pays half, a 12.5% owner pays an eighth.
Balances update as you type, and Trimtab works out the shortest set of payments that settles the whole group.
Every expense stores its own participants and shares. Changing the group later never rewrites what already happened.
Your data lives on your phone. No sign-up, no cloud account, no tracking, no ads — a group only ever leaves the device if you share it yourself.
Pick a currency per group. The interface follows your device language — English, German, Italian, French, Spanish, Portuguese, Croatian, Polish and Russian.
The ones that happen after a great week away, or every month between co-owners.
One person books the house, another fills the tank, a third pays for dinner. At the end everybody sees their real number instead of guessing.
Berth, insurance, antifouling, winter storage. Split by ownership share so a half-owner carries half the yard bill — automatically, every time.
Hangar, annual inspection, insurance and fuel across a syndicate. Every cost lands on the right partner in the right proportion.
About a minute from install to the first balance.
Name it, choose a currency, add the people involved. Give everyone an ownership share if the costs are not meant to be equal.
Who paid, how much, and who it was for. Every split is calculated to the cent — no leftover rounding.
Open the balances tab and follow the suggested payments. Fewest transfers possible, no arguments needed.
Free, offline, and quiet about your data.
Questions or feedback? Write to support@trimtab-app.com