Coastr is a platform to run on. KeyProof is proof to run under.
Coastr is an established UK rental management platform: a booking engine, fleet and telematics, connected-car and keyless options, channel management, the lot. It is built for firms that want to move their whole operation onto one system. KeyProof is the other shape entirely. It does not replace how you sell or ask you to migrate anything. It sits under the bookings you already run and captures the proof at every handover. Here is the honest version of which one a small firm actually needs.
From £59 a month for up to 5 carsThe renter pays the £4.99 verification feeNo contract, 30 days free first
KeyProof is pre-launch and no firm has signed yet, which is what the founding price is for. There is nothing to take on trust: walk the whole thing in the demo.
A system to adopt. Or a layer to add.
A booking engine, availability and diary, fleet and vehicle telematics, connected-car hardware, and channel management, designed so a firm can run everything in one place. That is genuinely useful if you want to run a larger, staffed operation on a single platform, and it is a real commitment to adopt.
It began at the part that decides every dispute: verified identity, a DVLA licence check the firm runs on gov.uk, your agreement e-signed, condition photos, and the deposit, in one record your insurer accepts. The diary, clash warnings and money tracking grew around that core rather than the other way round.
Moving onto a rental platform means moving your customers onto it too: a booking website, a funnel, hardware in the cars. If your bookings genuinely live in Instagram DMs and WhatsApp, and that is working, that migration is solving a problem you do not have. KeyProof leaves the channel exactly where it is.
Every rental platform can store a booking. The question a hire firm should ask is what it holds the day a renter denies the damage or does not come back. KeyProof was built for that day first, at tiered pricing a handful of cars can justify, with no hardware to fit.
So which do you need? It depends on the shape of your firm.
If you run a larger, staffed fleet, want a public booking site, telematics in every car and channel management across brokers, a full platform like Coastr may earn its keep, and KeyProof closes the evidence gap it leaves at the kerb. If you run a handful of cars through DMs and the thing you actually lack is proof, not a booking engine, KeyProof is the lighter fit: it adds the checks and the record without moving your customers anywhere or fitting anything to the cars. Coastr is a capable, established platform; this is not a claim that it is worse, only that it is a different tool for a different firm. KeyProof is pre-launch, built for a founding cohort of UK hire firms rather than by one: how it works, the demo, and the non-named version of this question at KeyProof vs rental software.
Keep your bookings where they are.
Add the proof underneath.
No platform to migrate to, no hardware to fit. Just the checks and the record, on every handover.
Locked for life, any fleet size.
30 days free on every plan. No setup fee, no contract, cancel any time.