You walk in with an idea and walk out with a working app. Web or mobile, your choice, built from an empty screen over two days with a coding agent doing the typing and you doing the deciding.
No payment and no commitment. We mail you once, when the dates are set.
Getting something on screen that looks like an app is fast now. Genuinely fast, in an afternoon. It is also where nearly everyone stops, which is why there are so many impressive AI demos and so few things anyone actually uses.
The second day is the one that matters. That is where it starts holding real data, where it survives somebody else clicking around in it, and where it ends up online at an address you can send to a colleague. Almost nobody gets to that day on their own, because that is where the interesting problems live.
It has to happen in a room because things go wrong, and when an agent goes wrong it looks exactly like it going right. Confident, plausible, finished. Learning to spot that takes someone sitting next to you saying "stop, look at what it just did" while it is still on the screen. You cannot get that from a video.
You go home with two things. The app, which is yours. And the setup that produced it: the instructions you wrote for the agent, the checks you made it pass, the habits you picked up by the second afternoon. That second part is what makes the next app take an evening instead of two days.
Web app or mobile app, whichever you want to build. Day one gets the foundation and the habits in place and the first real pieces working. Day two turns it into something you could actually put in front of someone.
Getting set up, getting the mental model straight, and getting the first working pieces on screen.
Everything from day one put to work, until the thing is online and somebody other than you could use it.
You do not need to be a developer. You do need to have used these tools enough to know that a chat window is not the whole story, and to want to find out what the rest of it looks like.
Everyone works on their own laptop for two days. There is no watching option, because watching is how people leave with notes instead of a skill.
You need to be able to install software on it. A locked-down company machine is the single most common thing that ruins a first morning, so check that now rather than on the day.
Claude or ChatGPT, on a plan that will not throttle you halfway through the afternoon. We send the exact list a fortnight beforehand so nothing is a surprise.
A terminal window should make you curious rather than anxious. That is the whole technical requirement. No development experience is expected or needed.
Optional, and it makes the two days considerably better. If you bring a real problem of your own, you leave with a real answer to it rather than a copy of the example.
DenkWork ships production software with AI every day. Two days here is two days with the people doing that work, rather than with somebody who read about it and made slides.

Originally from the Netherlands, Melvin has been the founding engineer of five VC-backed companies that have collectively raised over $400M. In Silicon Valley he led 100+ engineer teams at companies like Wag.

Önder runs operations and client relationships from Rotterdam. He brings years of management experience and has founded and built businesses in the Rotterdam area.
The room is small, so the first run fills from this list rather than from an announcement. It costs nothing and commits you to nothing.
You are on the list. We will mail you the dates before they go out anywhere else, and you can still say no then.
One email when the dates are set. Nothing else, and no list you have to escape from later. Prefer to write to us instead? Send an email