An operations book for the things you share.
One shared record for everything you co-own: reservations, hours, costs, and maintenance. Settled without friction.
Used by flying clubs, sailing co-owners, family vehicle pools, and vacation-home groups across Europe.
Four desks. One book.
Bookings without the back-and-forth.
A calendar built for shared use. Rules, slots, quotas, and conflict detection enforced quietly — so members book in seconds and admins never arbitrate by chat.
Hours, meters, maintenance in lockstep.
Every flight, sail, or trip is logged with start and end readings. Maintenance counts down by hours or calendar — the next due item is always visible, with the work order behind it.
Costs split the way you actually share.
Per-hour rates, fuel reconciliation, fixed monthly fees, and expense receipts roll into one ledger per member. SEPA reimbursements, online invoice payments, and an accountant export at month-end.
The history of the asset, in one place.
Licenses, ARCs, insurance, ownership splits, document scans, and a full audit trail. Every change is timestamped and attributed. Sell the asset and the book travels with it.
One flow, from booking the asset to closing the books.
Reserve
A member books a slot. Rules and conflicts are evaluated in real time. Confirmation goes to the calendar and to the member's inbox.
Operate
On return, the member logs hours or meter readings. Fuel, landings, and consumables are captured on the same form.
Cost
Rates are applied automatically. The usage log becomes a line on the member's invoice with VAT and currency handled.
Settle
Members pay online or via SEPA. Reimbursements clear in the same ledger. Balances reconcile without spreadsheets.
Maintain
Maintenance counters tick down. Reminders go out. Work is logged against the asset with cost, vendor, and parts.
Different assets. Same operating book.
Flying clubs & aircraft groups
Hour-based billing, ARC and 100-hour countdowns, fuel reconciliation by airport, and a flight log per member. Built for clubs that fly more than they argue about flying.
Sailing & yacht co-owners
Day and overnight bookings, engine-hour tracking, marina-specific fuel and dockage costs, and crew rosters that travel with each trip.
Vehicle & car co-ownership
Mileage-based or per-day rates, fuel and toll capture, MOT and insurance reminders. From a family second car to a small fleet, the book scales without rewriting it.
Vacation homes & co-owned property
Whole-day reservations, season-aware rates, cleaning and consumables tracked per stay, and a member balance that quietly settles the year-end accounting.
Trusted on the water and in the hangar.
The process of purchase and onboarding with Truant, a 49ft Bavaria based in Sanremo, was simple. A two-day sea trial and inspection, then straightforward paperwork. The real beauty is in finding a group of four others who I'm now sharing this adventure with. Each of us brings a different talent — our lead syndicate member is an engineer, another owns a carpentry business, and my skills are digital. I introduced an online app, Kai Sharing, that means payment, scheduling, maintenance, documents and issues are all visible and managed in one place. It's simplified the admin side, but what surprised me most was how straightforward the whole process was from the start.
See it run on a real asset.
Five minutes inside a populated demo group — bookings, hours, costs, maintenance, and the closing of a month — tells you more than a feature list.
Also on iOS and Android
