The operator's app

It starts with proof. Then it runs everything around it.

The crash-and-run cover is why firms start. What they keep is the system behind it: every booking, car, fine and pound in one place, instead of scattered across your head, a notebook and your DMs. KeyProof is car hire management software with a verified record at its core, not a booking calendar with paperwork bolted on.

Bookings and the diary

Take the booking. Never double-book a car again.

You keep talking to renters where you already do, Instagram, WhatsApp, phone. KeyProof keeps the diary behind it straight, so two people are never promised the same car on the same weekend.

An availability calendar per car

Every vehicle has its own live calendar. See at a glance what is out, what is due back, and what is free before you promise a date.

A clash guard before you commit

Try to book a car that is already out and KeyProof stops you. The double-booking that costs you a renter and your reputation never leaves the diary.

Additional drivers on the booking

Log every named driver against the hire, not just the person who paid, so the record matches who was actually allowed behind the wheel.

WhatsApp templates and review requests

Send ready-made messages for confirmations, reminders and the polite nudge for a review, without leaving the screen or retyping the same lines every hire.

Fleet and compliance

Every car, every renewal, nothing lapsing quietly.

An expired MOT or a missed insurance renewal is a car off the road and a claim your insurer can refuse. KeyProof keeps the whole fleet and its paperwork in one register, with a warning before anything runs out.

MOT, insurance, tax and ULEZ tracked

Each vehicle carries its own status for MOT, insurance, road tax and ULEZ compliance, so you know a car is legal to hire before it goes out, not after a fine lands.

A service log per vehicle

Keep the service and maintenance history against the car it belongs to, so you can see what was done and when without digging through receipts.

A document vault for the paperwork

V5, insurance schedule, MOT certificate and warranties held against the vehicle, so the document you need is where you expect it when an insurer or a renter asks.

A warning before it lapses

KeyProof flags a renewal coming due instead of leaving you to remember it, so nothing on the fleet expires without you seeing it first.

Money that adds up

See which cars earn, and which ones just sit there.

KeyProof never touches your money. You take it your own way, cash, bank transfer or your own card machine. It records the figures against every booking and totals them into the numbers that tell you where the profit actually is.

Rate cards and printable invoices

Set your rates once, price a hire in seconds, and print a clean invoice the renter can pay against, without rebuilding it in a notes app.

Deposits, fuel and mileage recorded

The deposit you took, the fuel owed and the excess mileage all logged against the booking, so nothing quietly slips before the car is back out on hire.

Running expenses per car

Service, cleaning, repairs and the rest, tracked against the vehicle they belong to instead of lumped into one pile at the end of the year.

Profit per car and occupancy

Income minus running costs, per vehicle, alongside how many days it was actually out earning. The car that looks busy but loses money stops hiding.

Records and risk

The proof at the core, and the risk handled around it.

Every hire ends in a sealed record: verified ID, a DVLA licence check, your signed agreement and timestamped condition photos. The rest of the risk work hangs off that same record, so a dispute is never your word against theirs.

A sealed record on every hire

Identity, licence result, signed agreement, deposit and before-and-after photos in one timestamped file per booking, ready to export straight to an insurer. This is the condition record everything else is built on.

Fines and PCNs, packaged for liability

A ticket lands weeks after the hire and the record already knows who had the car, with their name, date of birth, address and signed agreement. Recharge the renter or transfer liability to the council, and track it through to recovered.

Insurance claims logged to the booking

When a claim opens, it sits against the hire it came from, with the proof pack attached, so you are never reassembling evidence from a drawer and a camera roll under a deadline.

A private blocklist that stays yours

A renter who caused trouble goes on your own private blocklist, so they cannot quietly book again. It is your list, kept to your firm, never shared or sold.

One system, not five apps

Your chat stays your chat. Everything behind it lands here.

KeyProof does not replace how you sell. Keep taking bookings on Instagram and WhatsApp, keep your own agreement, keep your own deposit. What changes is that the diary, the fleet, the money and the proof stop living in your head and start living in one place you can hand to an insurer, a staff member or your accountant.

Bookings and the diary

A per-car availability calendar with a clash guard, additional drivers logged, and WhatsApp templates and review requests sent without leaving the screen.

Fleet and compliance

Every car with its MOT, insurance, tax and ULEZ status tracked, a service log kept, and a document vault for the paperwork, with a warning before anything lapses.

Money that adds up

Rate cards, printable invoices, deposits, fuel and mileage, and running expenses per car, totalled into profit per vehicle and occupancy so you see which cars earn.

Records and risk

A sealed record on every hire, fines packaged for liability transfer, insurance claims logged against the booking, and a private blocklist that keeps a bad renter from booking again.

KeyProof is pre-launch, built with a founding cohort of UK hire firms. See how it works, what it costs, or how it sits against rental management software.

Proof at the core.
The whole firm around it.

One flat price runs the bookings, the fleet, the money and the proof. Founding spots are open to a handful of UK hire firms, locked for life.