Stop building products
nobody wants.
Validate any startup idea in 10 seconds. Powered by 88,000+ raw signals distilled into 8,000+ high-value curated insights across 8 platforms.
Hi, I'm Bill Li.
My story doesn't start in Silicon Valley. It starts in a migrant school in Guangdong, where I first touched a computer in the 5th grade and never looked back.
Hustle wasn't a choice — it was survival. Factory floors as a teenager. Twelve-hour shifts at a restaurant door. Every spare hour spent reading computer books and teaching myself to code.
Ten years later I was leading engineering teams at some of the top AI unicorns, shipping systems used by millions.
Two years ago, I walked away from a senior leadership seat at one of those unicorns — stock options, title, and everything that comes with it — not because I had to. Technology is merely the “How.” I wanted to find my “Why.”
Today, we're building an AI product studio on a mission to hit $10M ARR — powered by a single conviction: great products should reduce human friction, give people their time back, and help them live happier lives.
PainHunt is our first product.
Why PainHunt? Because I've personally wasted 6+ months on product ideas nobody wanted. I've watched friends give up on building because they couldn't find their first real signal.
This is why we built it. If it helps one founder avoid that pain, it's worth it. If it helps ten thousand, we're just getting started.
— Bill
AI agent overnight bill
“Your new colleague ran up $47K and nobody noticed. Infinite loops, no cost controls.”
Security tool too expensive
“JFrog Curation at $300K/year is unaffordable. We need real-time package blocking.”
Sales commission theft
“$340K deal being split 50/50 because of one email. No CRM audit trail protection.”
All quotes are real — pulled verbatim from PainHunt's database.