Skip to content
Book a call
Book a call
← All services

Launch your product

You have an idea, maybe even your first customers, but nobody to build it. I build a first version with you that your users can test within a few days.

  • A first version to test within a few days
  • From €6,000 excl. VAT
Book a call

30-minute call, free and with no commitment.

You don’t need a tank

If nobody tests the product during six months of development, you find out too late what’s wrong. I’d rather release one well-chosen feature, then decide what comes next based on what your users say about it.

To do that, we agree from the start on who the product is for and what goes in the first version. We decide the rest after the first feedback.

How we go about it

  1. We scope the project: who it’s for, what problem it solves and what goes in the first version.

  2. I build a first version around the chosen feature. You can test it within a few days.

  3. You show it to your first users and we listen to what they say.

  4. We move forward in small steps. Each new version starts from their feedback.

The price

First version of a product
from €6,000 excl. VAT

That price is about 12 days of work. Tighter budget? Tell me and we’ll make the first version smaller. The exact price is written in the proposal, before we start.

After launch

Hosting
from €50 excl. VAT per month
Maintenance, hosting included
from €200 excl. VAT per month
Improvements, hosting and maintenance included
from €700 excl. VAT per month

I reply within 1 working day. Unused time doesn’t carry over, and outside services, like sending emails or AI, are at your expense. You can stop whenever you want: the code and the accounts stay yours. See the plans in detail

Some examples

What a client says

5 out of 5Malt
“Killian supported us in developing our MVP. He showed great maturity, and was able to understand what was at stake for the product and make it his own in order to develop efficiently. In addition, he demonstrated excellent communication skills, showing rigour and professionalism, which inspires confidence. He also managed to overcome development difficulties by finding relevant solutions with the means he was given. On top of that, Killian listens to feedback and quickly adapted to our way of working.”
Alexander, founder of Oramapp · 10 March 2025 · translated from French

Your questions

Another question? Email me at killian@propell.studio

What can I do with a first version?

Show it to real users and start looking for your first customers. It doesn’t do everything you have in mind yet, but your users can already use it.

I’m not technical. Is that a problem?

No. I explain the technical choices in plain words and you test each new version yourself. Your job is to tell me whether it does what you expect.

What happens after the first version?

We carry on in small steps if you want to. Oramapp, for example, was live in five weeks, then I supported the team for a year. If you’d rather carry on without me, the code and the accounts are yours.

My budget is smaller than that. Can we still talk?

Yes. We can make the first version smaller so it fits your budget. I’ll tell you during the call whether that’s doable.

Shall we talk?

The call lasts 30 minutes and it’s free. I’ll give you my opinion on your project, even if we don’t end up working together.

Book a call

or email me at killian@propell.studio

In Rennes.