From idea to working app. No developer needed.
We help non-technical professionals build real digital products using AI. Fast enough to test before you commit a budget.
LinCal, the calendar app for Linear, started as one prompt. It’s now used by 150+ teams worldwide.
Why now?
A few years ago, this required a developer, a budget conversation, and three months of waiting. Most ideas never made it past a notes app.
That threshold is gone. Platforms like Lovable, v0, and Cursor (and many others) let you go from description to working app in a single session. The question is no longer whether you can build it. It’s what you do once you have a first version.
This is not for developers.
It’s for the person with the idea. The product manager, the marketer, the founder, who has been waiting for a developer to build it for them.
Fresh van Root is a trusted partner for the practical application of AI in business. They look beyond the hype and provide the kind of realistic strategic guidance that gets results.
The 4 Levels of AI App Building
Every project starts at Level 0 — the idea in your head. It can stop at any level along the way. Knowing where you are and where you want to go is more useful than trying to skip ahead.
Level 00 – The idea in your head
The idea in your head. No way to show it, test it, or get feedback.
Level 01 – Built in 30 minutes
A working prototype. Built in minutes to hours. Runs in the browser.
Level 02 – Deployed and shareable
Others can use it. Deployed, shareable, no explanation needed.
Level 03 – When it gets real
A real product. Users, data, ongoing development.
Not every project needs to go past Level 1 or 2. Knowing where to stop is half the value.
With LinCal we did exactly this. One prompt in April 2024. Now an official Linear integration used by 150+ teams.
Dashboards, internal tools, content workflows, mobile apps — if you can describe it, we can prototype it.
You bring the idea and the domain knowledge. We bring the framework and the tools, and the building. Together we take it from description to working app.
You end up with:
✓ A working prototype, not a slide deck.
✓ An app others can use — not just you
✓ Real connections to the tools your team already works in.
✓ A clear decision on where to go next — or confidence that what you have is enough.
About Rolf and Fresh van Root
I’m Rolf Mistelbacher, a non-technical builder who has been shipping AI-powered apps since the early days of ChatGPT.
I’ve built dozens of applications: dashboards, productivity tools, content workflows, internal business tools. The best known is LinCal, a calendar view for Linear that started as a single prompt and is now an official Linear integration used by 150+ teams worldwide.
I’ve spoken about AI prototyping at AI Con USA and SaaStock Dublin, and I write regularly about what building without a technical background actually looks like.
Fresh Van Root is my company. Depending on your project, I bring in a network of domain specialists, so you always have the right expertise at the table.
Frequently Asked Questions
Do we need to have technical knowledge or coding skills?
No. That’s the point. You bring the idea, we handle the building
How long does it take to see a first version?
Most projects have a first working version within days, not weeks. Level 1 can happen in a single session.
What do I actually get at the end?
A working app — not a document or a mockup. Depending on the project, that’s a deployed prototype, a dashboard, or an internal tool your team can start using immediately.
Can you work with our existing data and tools?
Yes. We can connect your app directly to the tools you already use.
What about data privacy and confidentiality?
We treat all project information as confidential. For sensitive internal projects, we can discuss specific requirements during the initial call.
What does it cost?
Every project is scoped individually. As a reference point: what used to require weeks of developer time and a five-figure budget can now often be prototyped in days. Get in touch and we’ll give you a clear picture after an initial call.
Your idea. Working app.
Let’s build it.
