Pricing
The calculators are free. They always will be.
Charging for the maths would be charging for something you can check yourself on a sheet of paper. So the calculators are not the paid part and never will be. What is worth paying for is the paperwork the job actually needs — a label for every pane, the plan for the table, and a rack of offcuts big enough to be your real wall — because that is the part that costs you an hour a week and the odd wrong pane on a van.
One payment, nothing to cancel. Fourteen days to change your mind, refunded without questions.
Free
- Every calculator, in full — no locked fields, no trial
- Paste a cutting list straight out of a spreadsheet
- The rack: 25 offcuts — a real corner of the wall, not a demonstration
- Nest onto the rack before buying a sheet, and see what that saved
- Print the cutting plan and the specification sheet
- Twelve cutting labels — enough for a repair or a small order, carrying a small syntaxflow.io line
- Send a job to anyone as a link, with the sizes but never your price
- Export the cut list, the offcuts and the rack as CSV
- Your logo and company details on the specification sheet
- One saved job, kept in this browser
- Works with no signal. Every page you have opened is kept on the device, so the tools still run in a stairwell, a basement or a van. Add it to the home screen and it opens like an app
- Documents carry a small "made with SyntaxFlow" line
Pro · the paperwork the job needs
- Everything in free
- A label for every pane in the job, printed from the nest in cut order: piece code, size, glass, which sheet it came off and whether it was rotated. Plain A4, or the 70 × 37 mm sheet you already buy. This is the twenty minutes with a marker pen that you stop doing
- The rack holds 400 offcuts instead of 25 — a whole shop's wall, not a demonstration. On a forty-piece job, two racked offcuts took it from four sheets to two
- A rack that size stays workable: search it by size or by glass, sort it, and hide everything that is not the glass this job is cut from
- The job library. Save every job by name — sheet size, trim, breakout, price and the whole cutting list — and reopen it next month instead of typing it again
- Your own line on the labels and the documents instead of ours: company, registration number, your own disclaimer
- Every tool we add, now and later, at no extra cost
- No account to create and no login to remember
- Nothing to cancel, ever. One payment, and fourteen days to change your mind entirely, refunded without questions
Payment is handled by Stripe. We never see your card. Nothing about your projects leaves your browser, before or after. A PDF invoice reaches you automatically; add your VAT number at checkout if you need it on there. The terms say all of this again, carefully.
Being straight with you about the size of this. Twenty-nine euros once is not what pays for the site, and we are not going to pretend otherwise. It covers the hosting and it keeps the calculators honest — nothing is gated behind it that you need in order to get an answer. If you want to give us money and cannot see why you would, the right answer is probably that you should not.
And one thing you should know before you pay rather than after. There is no account here and no licence server, which is the promise every page makes — the unlock lives in this browser on this machine. That cuts both ways and both halves are true. The good half: there is nothing to cancel, it does not expire, and we will not charge you again. The other half: change computer or clear your browsing data and the unlock goes with it — write to us from the address you paid with and we will put it back, usually the same day.
The two things here that are worth real money
Everything else on this site tells you a number. The rack tells you not to buy glass. List the offcuts standing against your wall, and the optimiser cuts the next order out of them before it touches a fresh sheet — and refuses to open one unless doing so removes a whole sheet from the order, because fragmenting good stock for nothing is how most people would build this feature and it makes the shop poorer.
On the worked example we publish — forty pieces, 3210 × 2250 stock — two racked offcuts take the job from four sheets to two. At 28 €/m² that is 398 € on one order. Twenty-five offcuts are free forever, which is enough to run it against your own wall before deciding whether four hundred of them is worth twenty-nine euros once to you.
Why the calculators are not the paid part
A calculator that hides its working behind a paywall is asking to be trusted, and being trusted is exactly what we are trying not to need. Everything you would want to check — the formula, the coefficients, the standard, the worked example — stays visible and free, on every page, for good. Putting the answer behind a payment would break the only argument this site has.
So the paid part is not knowledge and not accuracy. It is the paperwork: a label for every pane, the plan for the table, your jobs and your letterhead. That is the part of the week that is neither knowledge nor accuracy, just time, and it is priced at about what one wrong pane on a van costs you.
If twenty-nine euros is not the answer to your problem
It very often is not. If what you actually have is a quoting spreadsheet only one person understands, three systems that do not talk to each other, or an optimiser sitting outside your order book so nobody knows what is on the rack — no web page fixes that, and we would rather say so than sell you a footer line.
That is the other thing we do, and it is the thing that pays for this: software written for one glass company, by the people who wrote every calculator here. It is a conversation and a fixed figure, not a price on a page. If it is not something we should build, we say that too.
If you already paid
The unlock lives in this browser on this machine, because there is no account for it to live in. Changed computer, or cleared your browsing data? Email from the address you paid with and we will put it back, usually the same day. It is a human answering rather than a licence server, which is slower than a login and is the price of not holding an account for you.
Refunds
Fourteen days, no questions and no form: write to the same address and the month goes back in full. Delivery is instant and there is nothing for us to take away, so we would rather refund you than have you feel stung over a small amount of money. After fourteen days we will still look at a genuine problem properly.