Software for Danish businesses

Software you actually own. Bought once, not rented monthly.

We build the system around how you work, set it up on your own accounts, and then it is yours. No subscription, no lock-in, no price increases.

// based in Denmark · fixed price · no lock-in
// example: a shift planning system built for a restaurant
The model

How it works.

Three things separate this from a subscription. They belong together, and the whole business rests on them.

01

We build it for you

Not an off-the-shelf product with fields you never use. The system is built around the way you already work.

02

It is yours

The system is set up on your own accounts. You are handed the code and can export your data at any time.

03

One payment

A fixed price agreed up front. No monthly bill, no price increases, no lock-in.

A system in production

The shift planning system.

The system we have rebuilt most often and know best. The manager posts the shifts, staff bid on the ones they want, and the manager approves or rejects. Everyone sees the same plan, and nobody has to ask twice whether they got the shift.

It runs in a restaurant today, where it replaced rounds of text messages and a manager holding the whole picture alone.

  • Works in the browser on staff phones, with no app to install
  • Bids and approvals, standing down with cover, notifications and live updates
  • Set up on your own accounts, code handed over, data exportable to Excel

From 12,000 DKK as a one-off payment, excluding VAT.

The range

What else we build.

Same model, different problems. These are the kinds of systems we build the same way.

Customer records and job tracking

Customers, jobs, photos and notes in one place instead of on a phone and in a folder.

Internal tools

Replace the spreadsheet everyone is afraid to touch with a real system.

Booking and appointments

Customers book themselves, so you stop coordinating over Messenger.

Recording and documentation

Fill it in on a phone, get a PDF out the other end.

Got something else entirely? Write to us and we will work out whether it makes sense. Read about custom systems.

What it looks like in practice

From a round of texts to one plan everyone can see.

A system in production at a real business, and the whole story behind it.

Restaurants Live since July 2026

Shift planning that keeps track of the waitstaff

One system where the waitstaff bid on open shifts themselves and the manager approves. No more rounds of text messages and no more waiting to hear whether you got the shift.

Read the whole story
Pricing

The price is on the website.

Most suppliers hide it. We show it, so you can do the maths before you write to us.

12,000 DKK
Shift planning, Basic
18,000 DKK
Shift planning, Plus
0 DKK
per month under normal use

Custom systems start at 12,000 DKK. All prices exclude VAT. See all prices and what is included.

About Tarnix

One developer. The person you talk to is the person who builds it.

Tarnix is a one-person company in Vejle, Denmark. There is no project manager in the middle translating your needs onward, and no salesperson promising something development cannot deliver. You talk directly to the person writing the code, you get a fixed price before work starts, and you own the system afterwards.

0
DKK per month under normal use
1
fixed price, agreed before work starts
0
lock-ins. Your system, your accounts, your data

Get a quote

Tell us briefly what the system needs to do. You get a reply with a fixed price, or an honest no if building it does not make sense.

We only use what you write to answer your enquiry. Read how we handle your information.

Prefer to write yourself: [email protected]