Kai runs the shared side of owning a holiday home: who stays when, what the house cost, and what it needs next. Every owner sees the same book.

Owners pick their weeks within the group's rules, find the codes and house notes when they arrive, and leave a short handover for the next family. Kai splits the bills the way the group agreed.
Charge per night, split the fixed costs by share, or both: the group chooses.
Each owner has an allowance of nights for the year, and bookings count against it as a running budget. Holidays and the weeks everyone wants follow the group's rules, so no one has to keep score in a chat.
When the house needs work, it can be closed for those dates: bookings are blocked and every owner is told why.
Illustrative figures
A share in a house is property. Kai keeps a proper share register next to the calendar and the accounts, so holdings drive booking rights and costs, and a change of owner is a recorded transfer rather than a spreadsheet edit.
| Owner | Shares | Nights YTD | Balance |
|---|---|---|---|
| Alex Thompson | 1 | 21 | 0 € |
| Jordan Rivera | 1 | 14 | −420 € |
| Casey Morgan | 1 | 27 | −960 € |
| Sam Chen | 1 | 7 | +180 € |
Illustrative figures from the demo group
One calendar for the house, check-in to check-out. Booking rules handle allowances and the weeks everyone wants; a cancelled stay goes to the next owner on the waitlist.

Pest control, the heating service and the yearly inspection scheduled by date, with the cost of each job attached to the house.

Stays, cleaning, utilities and repairs split by the group's rules. Every owner sees their own balance and pays online or by bank transfer.

The wifi, the alarm, where the keys are and how the pool pump runs in winter, written once and there for everyone.


Kai's apps for iPhone, iPad, Android and Mac are where owners book their stay, find the house notes, leave a handover and report anything that needs fixing.
iPhone · iPad · Android · Mac
Special reservations for the weeks that matter, and rules the owners voted on.
Cleaning, the gardener and the pool as expenses, split the way the group agreed.
Deeds, insurance and contracts, next to the house they belong to.
Pick a date with a poll and keep the decisions with the group.
Owners who sell shares in their own homes use Kai as the operating layer: every house runs as its own group of owners, and you keep the direct relationship with each of them. We'll set up one of your houses on a trial.
The demo group holds Mas des Oliviers, a farmhouse in Provence, with stays, maintenance and costs already in it.