STOP WAITING FOR DEVELOPERS. BUILD IT YOURSELF.
Who will guide you
I am the co-founder of Rejoy – a Slovak wellness app for sleep and mental health. I built it on my own for years, without AI. Today it has thousands of users and a 5.0 rating on the App Store.
Now I use Claude Code and other AI tools as my dev team. I assign tasks, guide architecture, and check results. I know not only how to code a product, but also how to get it to real users.
I'll show you how to get to the first version of your idea in a weekend.
What I built this way
Rejoy – sleep and mental wellness app (iOS, Android, web app).
A series of internal tools: analytics for Rejoy (in-app, marketing, Mailchimp), a 90-day Instagram content analytics app, and a cold-outreach tool – all built with AI using the same stack I will teach you to use.
AI agents handling content creation, marketing materials, newsletters, invoicing...
In the masterclass, you get the same roadmap – but for your own idea.
THE STACK
(Tools)
No complex environment setup. I'll show you my 'speed-run' stack that powers Rejoy and internal tools:
- Claude Code / Open Code / Antigravity: Professional AI environment where we write and edit code directly in the terminal.
- Supabase: Backend and database that works instantly and provides easy authentication.
- Vercel: Fast hosting and automatic deployment of your frontend to the web.
- GitHub: Repository for version control and connecting with Vercel.
- OpenRouter: Access to the most powerful AI models for your application.
BLUEPRINT
(What we will write)
We won't learn every framework in the world. We'll focus on making you able to read and modify code generated for you by AI.
- We'll primarily use JavaScript/TypeScript (frontend + simple backend).
- I'll show you which parts of the code you need to understand and which to leave to AI.
- You will get basic patterns (templates) that you can copy and adapt for your project.
THE DEPLOYMENT
(Getting it out there)
Code on your computer is just a theoretical hypothesis. The system truly comes to life only when it closes the feedback loop with reality and the first user.
- I'll show you how to get it on the web or your phone (PWA) within hours.
- Goal: leave with a functional link or an icon with your app on your phone – a first version you can show and let your team, friends, or even investors test.
Your weekend project
THE INTERNAL BRAIN
Digital Archivist
Automatic mailroom. Turn PDFs and invoices into clean data without retyping.
THE LEAD MAGNET
Customer Machine
Interactive calculator. Give value to client in exchange for their email. Automatically.
THE POCKET COACH
Your Digital Product
Own educational app. Sell your know-how via mobile. Locked content and payments.
BUILD YOUR OWN IDEA
Own MVP
Have your own idea? If it's feasible in 48 hours, we'll help you build it.
Workshop Results
What you can build in 48 hours
From programmers who wanted to speed up development manifold to founders who wrote their first code ever.
These apps were built in a single weekend.
Quiz Generator
Interactive AI-powered platform for creating quizzes from PDF materials. Students can instantly test their knowledge.
Vehicle Management
Comprehensive vehicle management system, tracking documents and insurance with expiration alerts.
Smart Time Tracker
Intelligent AI assistant that extracts time-spent details from free text and assigns them to specific projects.
Temperature Monitor
Modern temperature monitoring application for tracking trends, perfect for families with children.
What do graduates of the AI APP Weekend say?
“Hats off to how Martin handled it on 4 screens at once”
The workshop helped me improve in using Claude Code, GitHub and prompting. Overall, it pushed me further in development and I developed my own MCP for an editorial system (and now also for OpenCart). Thank you, it was great.”
“Real solution of your own app step by step”
“The workshop was exactly what I needed to experience. Big thanks for showing me new possibilities of vibe coding and how even a non-programmer can develop their own applications. I recommend it to everyone, this investment will return to you several times over.”
An agency will charge you for 'Robust Infrastructure' for a million users you don't have yet. They create a bloatware full of features. With AI, you build a 'Lean' product – maybe less robust, but finished in a weekend and for 1/30th of the price. If the market says NO, you didn't lose €17k.
THE INVOICE DISSECTOR
For €17,500 you get one attempt.
For €499 you learn how to have infinite attempts for free.
What will you choose?
THE FORMAT: "APP IN A WEEKEND"
/ masterclass
(Next Term: February 21-22, 2026)
Where will we create?
We meet online, so we don't waste time traveling, and you work directly from the environment where you feel best. Just prepare a coffee, turn on your second monitor, and join in. We operate in real-time: simultaneously creating code, sharing screens, and instantly solving any errors right on your project.