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Ketryon

You have paying customers

And now you don't dare touch the code

It works, people pay for it, and every change feels like pulling a block out of a tower. That's not cowardice — it's that nobody knows what will break, because nothing tells you. We make it safe to change again, without pausing sales while we do it.

Why it feels like this

Nothing tells you when something breaks

A product with real customers in it becomes dangerous to change for five reasons, and none of them is about what the code looks like.

  • There are no tests

    So every change is tested by your customers, in the live product, and you find out through support.

  • Shipping an update is a ritual

    A few steps in the right order that only you know, and no way back when the fifth one goes wrong.

  • Everything is tied to everything

    You change the price in one place and the invoice goes wrong in another. Nobody designed that connection — it just grew.

  • There's no copy to practise on

    No test environment, so the only place to try something is where the customers are.

  • You're the only one who knows

    Which is manageable until you're ill, on holiday, or want to sell the company.

How we do it

Changes you can undo

  1. 01

    First, a safety net

    Tests around whatever costs money when it goes wrong: payments, sign-in, anything that counts. Not around everything — around the expensive parts.

  2. 02

    Shipping an update becomes a button

    One click, with the same result every time, and a way back that's just as simple.

  3. 03

    You get a copy to try things in

    The same as the live product, with made-up data. There, you and I can be wrong without any customer noticing.

  4. 04

    Then we change what you wanted to change

    The things that sat untouched for six months because nobody dared. Now a mistake costs a rollback rather than a weekend.

How it works

How the subscription works

  • One flat price

    The same amount every month. No hours to approve, and no invoice that turns out bigger than you expected.

  • One task at a time

    You put the most important thing at the top. I build it, you test it, then we move on to the next thing in the queue.

  • Delivered in days

    Most tasks are done within 48–72 hours. Anything bigger gets broken down until it isn't.

  • Pause whenever you like

    No lock-in and no notice period. Pause between launches and pick up where you left off.

Price

One price. No hours to approve.

You know what it costs before you start, and you still know in month three.

The safety net is usually the first request, and it pays for itself on the first change that didn't turn into an incident.

Subscription

SEK 29,900/month

Excluding VAT. No lock-in, no notice period, no setup fee.

Start the subscription

VAT is added at checkout. You land in Slack straight afterwards.

What's included

  • One active task at a time, unlimited tasks per month
  • Web and app — the same person builds both
  • Delivery within 48–72 hours for most things
  • You own everything from day one
  • Ongoing questions in Slack, without them counting as a task
  • Pause or cancel whenever you like

What's not included

  • On-site staffing at your office
  • Public procurement and tenders
  • Round-the-clock support

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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.