Hey, I'm Christiaan.

Wanted to learn vibe-coding, looked for a good AI trainer, couldn't find one — so I built my own.

Father of three. Based in Haarlem, Netherlands. Train four times a week, usually a mix of airbike and strength training. Always loved sports.

By day I'm Head of Global Marketing at Nordcloud (part of IBM). On the side I do freelance full-stack marketing through P2P Concepts, which is how I got into vibe-coding personal projects. CoNudge is one of them.

Not a developer. CoNudge was built with Claude Code in three days. Still a bit buggy, but it works great for me. Been using it daily for a few months now.

I just wanted a solid training program without paying hundreds a month. Progressive overload, periodization, RPE. Like a good trainer builds. That didn't exist. So I built it.

And every four weeks Coach evaluates: are you getting closer to your goal? Does anything need to change? No app does that. That's why I built CoNudge.

A friend said: make it an app. Co + Nudge. Together, a gentle push in the right direction.