The painting estimator built from real jobs, not guesswork. Measure the room, price it to the cent, send the quote. Works with no signal. Free.
Start quoting freeBuilt for the iPad on site. Works on your phone and any computer.
On the tools or running crews, it ends the same way: notes from the walkthrough, a spreadsheet at the kitchen table, a PDF at midnight.
While yours waits for the weekend, someone else's is already signed.
You, your estimator, whoever walks the job: without a system the price depends on who measured, and round numbers eat the margin.
Walk the job with your iPad. Rooms, elevations, floors, line marking.
Your rates drive every figure. Coats, prep, sundries, GST, live.
The branded proposal your client signs comes through Pro. A free one-page record stays in your files.
Every quote follows it, whoever does the measuring. Enter your true cost and watch the margin, live.
Over a hundred substrates with real production rates. By the m², the metre, the count.
In-app camera, one tap per room. Photos stay on your device and flow into the proposal.
Mark quotes won or lost. Your real close rate and quote time, measured, not guessed.
Your numbers, not ours. Slide to what quoting takes you today and see what the time is worth.
Your sliders, your numbers, 48 working weeks. Change anything above and it reprices live. The estimator is free, so the only way to know is to quote one job with it.
Your quote becomes a branded proposal. Most clients pick the middle option, and your average job grows without an extra lead.
On the roadmap: an AI receptionist that answers the calls that ring out while you are on a job. A missed call is worth about $1,200. Subscribers get it at today's price.
You meet Pro inside the free app. Nothing free ever moves behind it.
Every painting business has one. The half-built spreadsheet. The folder of old quotes doing duty as templates. The pricing that lives in one person's head. It works until that person is on leave, or a formula breaks and nobody remembers writing it.
Kastrion is that system, finished. It began as the estimating sheet a working painting business quotes with every day. Every formula ported, every total checked against real invoices until they matched to the cent.
So spend your hours where they pay. Walk the job, quote it on the spot, send the branded proposal while the handshake is still warm. Hand the next one to your estimator: your rates, your surfaces and your standards are already in the system, so every quote comes out yours, whoever measures.
Then open the win rate Kastrion measures for you, and see what changed. We would rather show you a number than promise you one.
Yes. The whole calculator runs on your device. Measure, price and save a full quote with zero signal, then it syncs when you are back in range. New builds and black spots are exactly what it was built for.
The full calculator and your one-page job records are free forever. No trial clock, no save limit tricks. Kastrion Pro adds the branded proposals your clients sign, and sells itself beside the free tools, never in front of them.
Built for the iPad on site first. It also works on iPhone, Android and any computer with a browser, and you can add it to your home screen like any app.
Yes. Change your hourly charge rate in one place, or tune any production rate, spread rate and paint cost per substrate. Saved quotes keep the rates they were priced at until you choose to refresh them.
Then Kastrion is the system you hand them. Set your rates and substrates once and every quote prices from the same numbers, whether it is you, your estimator or the new hire measuring. Same job, same price, whoever walks it.
Kastrion is a cell-by-cell port of an estimating system a working painting business quotes with every day. It is validated by 89 test vectors and reconciled against two real invoiced jobs, to the cent.
Pro turns your quote into a branded proposal with three price options your client can sign from their phone, with a deposit on signature. An AI receptionist is on the roadmap. Pro never blocks anything free.
Kastrion installs straight from the browser. Free, instant, no app store.
Open kastrion.com in Safari, then two taps:
It installs like any app. No App Store, nothing to pay.
In Chrome or Edge, open the browser menu and choose Install app (or Add to Home screen).
Installs in one tap when your browser offers it.
Open it now, measure one room, and watch the total land to the cent.
Start quoting free