"Expectation creates reality."
Rotterdam / Mendix / Solo builder
I see product building as a game.
Find the pattern. Remove the noise. Level up the feel. Ship. Repeat. In Mendix, we provide a mobile platform so other teams can build apps. I currently manage 5 projects across 3 active versions.
Harun Karahan
Builder in Rotterdam. Mendix by day. Independent product loops after that.
- Rotterdam
- Mendix
- Solo
- Disciplined
Mobile platform delivery for teams building apps inside Mendix.
- Ethic
- Equalism
- Meaning
- Fun
React Native
React
Angular
Reusable mobile foundation inside Mendix across multiple product teams and release tracks.
Journey
Travel keeps the eye sharp and the work honest.
- Observe
- Simplify
- Build
- Release
- Fitness & nutrition
- Travel & cities
- Ambient sounds
- Language learning
- Product strategy
- Systems thinking
Málaga
June 2026
🇪🇸
Andalusia. Warm sun, Picasso, and slow mornings.
36.7213° N · 4.4213° W
4
Apps shipped
5
Live projects
3
Tech stacks
∞
Game loops
"Simplicity is the ultimate sophistication."
— Leonardo da Vinci
Fasting AI
Health
Elwind
Focus
Fitanalysis
Fitness
Lexio
Learning
4 independent apps. Each solves a real problem I've faced.
- Systems thinking
- Product strategy
- Behavioral design
- Language & cognition
- Stoic philosophy
Product shelf
One shelf. Four products. Clear positioning.
Health
Fasting AI
Meal timing with real nutrition logic.
Focus
Elwind
Ambient sound, notes, and softer planning.
Fitness
Fitanalysis
Journey-based fitness structure with better clarity.
Learning
Lexio
Story-based vocabulary. Still a concept for now.
