PRD → prototype, priced by complexity
Feed the cauldron a PRD — Markdown, Word or plain text. Out comes a clickable prototype on its own subdomain, plus the full source code. Priced by complexity, 10 € to 500 €. No subscriptions, no retainers, no incantations.
The cauldron
Everything below is a working walk-through of the flow. The sign-in and the payment are simulated — the price maths is the real thing.
Step 1 — Upload
Drop your PRD here
or — nothing leaves your browser in this demo.
Step 2 — Analyse
Step 3 — Your quote
Itemised, as promised
| Total incl. 19 % VAT | 140 € |
|---|
Step 4 — Sign in
We use your address for the delivery email, the invoice and nothing else. No newsletter unless you ask for one, and even then we'd think twice.
Step 5 — Pay
Step 6 — Brew
Step 7 — Delivered
Click through it, share it, argue about it in stand-up.
https://bakery-crm.prdconvert.appHosted 30 days free, then 3 €/month or self-host — you own the code. Your PRD is deleted 7 days after delivery.
How it works
No kickoff call, no Figma licence, no "let's circle back". You upload, we count, you pay, the raven flies.
01
Upload the PRD you already have. Markdown, Word or plain text — headings, bullet points and half-finished sentences are all fine. We read it the way a careful engineer would: looking for screens, flows, roles and the integrations you mention in passing.
02
In under a minute you get a fixed quote, itemised: screens, flows, integrations, entities, roles. Between 10 € and 500 €, never more. If we counted wrong, adjust the assumptions yourself — the price moves with them, before you pay.
03
Pay once. About a quarter of an hour later your prototype is live on its own subdomain and the full source lands in your inbox as a zip. Click through it, share it, ship it — it's yours, with no strings and no watermark.
What you get
Pricing
No plans to pick, no seats, no call with sales. We count what your PRD asks for and multiply by what it costs us to build it properly. The total is capped at 500 € — even for the whole grimoire.
10 € base + screens × 6 € + flows × 9 € + integrations × 15 € + entities × 4 € + roles × 12 € → capped at 500 €
10 – 49 €
A landing page, a form, a tiny tool.
50 – 149 €
A small app with sign-in and a dashboard.
150 – 349 €
Multi-role app, integrations, payments.
350 – 500 €
Marketplaces, multi-tenant, the whole grimoire.
You see the price before you pay. Always.
Get my quoteExamples
Three PRDs of very different weight, what came out of the cauldron, and what each cost. Every one of them is loadable as a sample above.
Before — todo-app.md
# Tidy — a todo app ## Screens - Today: list + capture field - Task detail, Archive, Settings ## Data Task (title, due, done)
After
Before — bakery-crm.md
# Krümel — bakery CRM ## Roles Owner, Staff ## Screens - Dashboard, Customers, Orders board - Invoices with Stripe payment links
After
Before — marketplace-payouts.md
# Werkbank — furniture marketplace ## Roles Buyer, Maker, Admin, Support ## Flows - Checkout with card / PayPal / SEPA - Weekly payouts via Stripe Connect
After
Reply to the delivery email with what's off. No form, no ticket number, no "we're sorry to hear that".
FAQ
Markdown (.md), Word (.docx) and plain text (.txt), up to 10 MB. Google Docs exports to .docx in one click. PDFs are on the list; photographed napkins are not.
We count five things in your PRD — screens, user flows, integrations, data entities and roles — and multiply each by a fixed rate: 6 €, 9 €, 15 €, 4 € and 12 € respectively, on top of a 10 € base. The sum is capped at 500 €. You see the itemised breakdown before you pay and can correct any count we got wrong.
Then the prototype will be too — but you'll know before you pay. The analysis assumes the simplest reading of your spec, and the quote shows exactly what it assumed. For very thin documents we'd rather send you back to write two more paragraphs than take your money.
Yes. All of it, MIT-style, no attribution required. Self-host it, hand it to your agency, feed it to another cauldron. We keep nothing except the invoice.
By default plain HTML, CSS and vanilla JavaScript in a single folder — opens from a file, deploys anywhere. React with Vite and Tailwind on request, at the same price. No framework that expires next quarter.
The subdomain stays live for 30 days at no charge. After that: 3 €/month to keep it, or download the zip and host it yourself. We email you twice before anything goes dark.
If the prototype doesn't match your PRD, we re-brew once for free. If it still doesn't, you get your money back. Reply to the delivery email; a human reads it.
Yes. Every payment comes with a PDF invoice showing net, 19 % German VAT and our VAT ID. EU businesses with a valid VAT ID are invoiced net under the reverse-charge rule.
Ready when your spec is
One upload, one price, one prototype. Between 10 € and 500 €, decided by the document — not by a salesperson.
Drop your PRD