Complex Analysis, Handled by AI.
Execution, Driven by People.

I was a seller too, up all night planning products and picturing the customers who'd buy them. But my first app, built over six months on nothing but my own hunches, came back with a brutal verdict: zero sales. That's when it hit me. Markets are validated by cold data, not by how much you believe.

So I flipped the approach and followed real market signals instead. One month later, I'd launched a commerce platform and hit 200M KRW in monthly revenue.

Because I've lived both the failure and the success as a seller, I know the fear that keeps sellers up at night when they face the wall of going global. "What if someone who'd already made my mistakes could test the market for you first?" That one wish is why I built UserWhy.

Ten years at a major enterprise, a stint as a startup CTO, and years of AI research. I've poured 15 years of my career into this. UserWhy isn't just another automation tool. It's your partner for getting great K-products out into the world, faster and with less friction.