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Ketryon

You built a prototype yourself

It works when you demo it

It doesn't work when fifty people sign in at once. That's not because you built it wrong — a prototype is built to be looked at, which is a different thing from being used. I turn it into something that holds up, without you starting from scratch.

Tell me where you are

Three questions, then you get a clickable sketch for free.

Here's how it works: you describe it in one sentence, the sketch is built in your browser, and you change it by typing what you'd like done differently. It can't go live — but it makes it much easier to talk about what should actually be built.

What breaks

Always the same five things

Whether the prototype was built in Bubble, Lovable, Figma or by hand. It's not the tool's fault — it's the difference between showing something and running it.

  • It loses data

    Two people save at the same time and one of the changes disappears. Nobody notices until someone gets in touch.

  • The sign-in runs on trust

    It keeps the curious out. It doesn't keep out anyone who knows what they're doing.

  • It slows down with real data

    Fifty rows were fine. Fifty thousand aren't, and it's the same code.

  • Nobody knows what's live

    You deploy by dragging something somewhere, and there's no way back when it goes wrong.

  • You're the only one who can change it

    Which means it doesn't change, which means it doesn't get better.

How it works

Your product, not a new one

  1. 01

    We read what you've built

    Before anything is rewritten. Most of a prototype is well thought out — it's just built to be demoed, not used.

  2. 02

    What carries weight gets rebuilt

    Database, sign-in, payments, deployment. The parts that break silently, and that cost the most to replace later.

  3. 03

    The rest comes along

    Flows and screens that work stay as they are. You'll recognise your product afterwards.

  4. 04

    You get the keys

    The code is yours, in your repo, with a deployment you can run yourself. No lock-in, and nobody sitting on the passwords.

What it costs

SEK 19,900 a month, one thing at a time

A subscription instead of a project: you have one active request on the go, I deliver it, you send the next. Pause when you don't need anything, cancel when you're done. No setup fee and no lock-in.

A rebuilt prototype is usually a couple of requests — not a six-month project with a quote at the bottom.

More from Ketryon

Just need a page or a video?

Two standalone services for when a whole subscription is more than you need — a landing page or a launch video, made by the same person.