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HELSH-JS, a one-person software studio in Belgium

pronounced "hellish". yes, deliberately.

Who

A one-person software studio in Belgium.

Building for founders and businesses since 2019. You talk directly to the person making your product.

Why

Most good ideas never get built.

Software can feel big, slow and expensive to start. I keep it clear: a written plan first, then working software you can try early.

What

Apps, web apps, AI and websites.

From the first sketch to launch day, and after.

Four ways in.

Most projects start behind one of these doors. Not sure which one is yours? That's what the first call is for.

Freelance contract · ongoing since 2025

Eagl

No more manual month-end close. Eagl turns a finance team's know-how into automation.

AI agents that catch booking errors before they hit the close, reconcile every account, and book, follow and reverse accruals. I work inside their team on a long-running freelance contract.

Read the story →
Eagl answering a question about a suspense account and flagging new findings. No more manual month-end close.

Own product · live

Felix

An app that helps independent boutiques bring good customers back.

It tells the owner who to contact today, and why, then drafts the message. Nothing goes out until the owner presses send.

Read the story →
Felix listing customers to contact, with a drafted message ready to send.

In progress · launching soon

SF Sales Solutions

I'm building a careers site and admin app for a sales recruiter.

With a one-minute application, an event page and a phone-friendly admin app for the founder.

Full story when it launches

The SF Talent Day page with its free ticket.
Step one of the SF Talent Day application.
Duurt één minuut · geen cv nodig

In progress · launching soon

Tradi

I'm building a website for a menswear agency, in three languages.

Store owners will see the collections and plan a showroom visit.

Full story when it launches

Tradi's homepage in a browser: four brands, one agent, with the list of brands below.
Tradi's block for planning a showroom visit by appointment.

Side project · live

ReadyToBinge

Trailers instead of posters. Swipe, pick tonight's film, see where it streams.

In the App Store, on Google Play and in the browser. Friends can talk each title over in its own thread.

Read the story →
A title in the ReadyToBinge feed, with where to stream it.
A trailer in the ReadyToBinge feed.
Swipe for the next trailer

How it works

From napkin to launch day, one step at a time.

A website can take days, a full system takes weeks. We work out what fits once we know what you're building.

The full process →
  1. Step 1

    Discover

    We take the problem apart. You get a written plan.

  2. Step 2

    Sketch

    Quick prototypes, so wrong ideas get thrown away cheaply.

  3. Step 3

    Build

    We build it in small steps, and you can try it as we go.

  4. Step 4

    Ship

    App store reviews and all the small print. A calm release.

  5. Step 5

    Support

    I stay around, or hand it over cleanly. You're never locked in.

Journal

Notes from the workshop.

All notes →

Your turn

What's your idea?

Project type

I try to reply within one working day. Read the privacy policy.

Or write to info@helsh-js.com