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“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.

No contract. You talk to the person who builds it.

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 ship new versions 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. 1

    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. 2

    What carries weight gets rebuilt

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

  3. 3

    The rest comes along

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

  4. 4

    You get the keys

    The code is yours, on your own accounts, and you can ship a new version yourself. No lock-in, and nobody sitting on the passwords.

What waiting costs

Every week it doesn't hold is a week when new users meet an error message instead of what you built.

Free

A written review of your app

Send a link to your app or prototype and what you're wondering about. You get a written review back: what holds up, what doesn't, and what I would do first.

An answer within two working days. It costs nothing and commits you to nothing.

From a client

Daniel Hjortvall

★★★★★

“I have had the privilege of working with Ketryon for several years, and my experience has been consistently excellent. … Ketryon combines strong expertise with a solution-oriented approach, which has greatly contributed to the success of our projects.”
Review on Google

Price

One price. That's it.

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

SEK 29,900/mo

excl. VAT

no lock-in

  • One active request at a time
  • Web, app, payments and AI
  • You talk directly to the person who builds it
  • No hours to approve
  • Pause or cancel whenever you like

Tell me
where you are.

Three questions about what you want to build and when. Then we show you what actually applies to you.