Outgrowing your car rental spreadsheet?
Excel and Google Sheets are free and familiar — but they can’t take online bookings, can’t stop double-bookings, and don’t handle deposits or contracts. See what you get when the spreadsheet is also free, but an actual system.
0% commission · Free forever · No card required
A spreadsheet works for your first vehicle or two — it’s free, flexible and familiar. But it can’t take bookings online, can’t show real-time availability (so two customers book the same car), and has no deposits, contracts or reminders. Ownima does all of that, and is also free forever with 0% commission — so you don’t trade "free" for "a real system".
Where the spreadsheet starts costing you
No online booking
Customers can’t self-book — every reservation is a manual message and a manual row.
You’re the bottleneck, 24/7
Double-bookings
No real-time availability means two customers book the same vehicle for the same dates.
Cancellations, refunds, angry reviews
No deposits or contracts
Deposits are tracked in your head; contracts are paper or nothing.
Disputes you can’t win, deposits you can’t prove
Manual everything
No reminders, no payment links, no reporting — every step is copy-paste.
Hours lost weekly, no-shows you can’t reduce
Keep "free" — add the system
Everything the spreadsheet can’t do, with 0% commission and a free-forever plan.
- Real-time availability
One live calendar across all channels — no double-bookings.
Every booking updates availability instantly, everywhere.
- Online booking + payments
Customers self-book and pay with PromptPay, MoMo, LINE Pay or cards.
Deposits and pre-auth handled automatically — no manual chasing.
- Digital contracts
Bilingual contracts signed online before pickup.
EN/TH, EN/VI, EN/RU — a record you can actually rely on.
- Automatic reminders
Booking and return reminders cut no-shows by up to 60%.
The follow-ups you never have time to send by hand.
Spreadsheet vs Ownima
What changes when you move off Excel/Sheets
Excel / Google Sheets
- No online booking — every reservation is manual
- No real-time availability → double-bookings
- Deposits tracked by memory; paper contracts or none
- No payment links, no reminders, no reporting
- Breaks down past a handful of vehicles
Ownima
- Customers self-book online, 24/7
- One live calendar — no double-bookings
- Automated deposits + bilingual digital contracts
- Local payments, reminders and live reporting built in
- Scales from 1 vehicle to a full fleet
Used by operators across Thailand · Vietnam · Russia
Excel vs Ownima — common questions
Most asked Is there a free car rental alternative to an Excel template?
Yes — Ownima’s core plan is free forever with 0% commission. Unlike a spreadsheet it adds online booking, real-time availability, deposits, digital contracts and reminders, so you don’t have to choose between "free" and "a real system".
Can I import my existing spreadsheet?
Yes. Export your vehicles, customers and bookings to CSV and import them into Ownima — the columns map automatically and most operators finish in well under an hour.
Why do double-bookings happen in a spreadsheet?
A spreadsheet has no shared real-time availability, so if you take bookings by phone, chat and walk-in, two of them can land on the same vehicle and dates. Ownima keeps one live calendar across every channel, so that can’t happen.
What does Ownima do that a spreadsheet can’t?
Online self-booking, real-time availability, automated deposits and pre-auth, bilingual digital contracts, local payments (PromptPay, MoMo, LINE), automatic reminders, and live reporting — none of which a spreadsheet provides.
Is Ownima really free?
Yes — the core plan is free forever, 0% commission, no credit card to start. It’s already used by 20+ operators across several countries.
Move off the spreadsheet this week
Free forever, 0% commission. Import your sheet in minutes.