Every recurring argument, gone
The boring problems shared cars create — already solved
Texting back and forth to figure out who has the car this weekend
Shared calendar shows availability — book your time instantly
Nobody tracks mileage so costs are split unfairly
Automatic mileage logging for fair, usage-based cost sharing
Oil change overdue because everyone assumed someone else did it
Service reminders based on mileage and time intervals
Insurance documents scattered across email threads
Centralized document storage for insurance, registration, and service records
Gas receipts pile up and nobody reconciles them
Snap a photo of receipts — expenses are tracked and split automatically
Unclear rules about long trips or overnight use
Configurable booking rules with max duration and notice periods
Built for Your Workflow
Every feature designed for how you actually share
Booking rules
Book the car with clear rules — maximum reservation lengths, minimum notice, and no double-bookings.
- Conflict-free scheduling
- Maximum booking duration rules
- Minimum advance notice
- Recurring reservations
Mileage Tracking
Log odometer readings before and after each use. Kai calculates mileage-based costs automatically.
- Odometer start/end tracking
- Per-mile cost calculation
- Usage reports per driver
- Annual mileage summaries
Expense Splitting
Track fuel, insurance, parking, and maintenance costs. Split them fairly based on usage or equal shares.
- Receipt photo uploads
- Usage-based or equal splits
- Monthly cost reports
- Outstanding balance alerts
Service Reminders
Never miss an oil change, tire rotation, or inspection with mileage-based and time-based alerts.
- Mileage-based service alerts
- Time-based reminders
- Service history log
- Upcoming service dashboard
How It Works
Up and running in 2 minutes
Add Your Vehicle
Create your vehicle group, enter car details, and invite your co-owners or family members.
Set the Rules
Configure booking rules — max duration, advance notice, blackout dates — whatever works for your group.
Drive & Log
After each use, log mileage and any expenses. Kai handles the math automatically.
Stay Maintained
Get alerts when services are due. Track all maintenance in one place so nothing falls through the cracks.
Insurance, registration, and the renewals that catch families out
Shared cars don't get sold because of fuel splits — they get sold because someone's policy lapsed in March. Kai keeps the paperwork in one place and reminds whoever's responsible.
All documents, one place
Insurance, registration, title, service records — uploaded once, visible to every owner.
Renewal reminders before they bite
Insurance, registration, emissions, inspection — each gets a 60/30/7-day nudge to whoever owns it that period.
Claims-ready in 60 seconds
Vin, plate, policy number, pictures of damage — pull what an adjuster needs without scrolling a thread.
Service history that follows the car
Every oil change, brake job, recall — captured against mileage, not a memory.
Driver-by-driver mileage proof
If your insurer asks who drove what, you have the answer — not an estimate.
Hand-off ready
When a family rotates out of the share, the next group inherits a complete file — title to last receipt.