Stop building products
nobody wants.
Validate any startup idea in 10 seconds. Powered by 1,021,144+ raw signals distilled into 414,608+ high-intent insights across 21 data sources.
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
From slide deck to live demo
What 100 founders saw on April 18 — the same data, the same playbooks.
AI agent overnight bill
Autonomous coding agents run up cloud bills overnight with no budget ceiling — one reported $47,000 from infinite loops nobody was watching.
Security tool too expensive
Supply-chain curation tooling prices out mid-size teams at roughly $300K/year, leaving them without real-time package blocking.
Sales commission theft
Sales reps lose commission on six-figure deals to attribution disputes because CRMs keep no tamper-proof audit trail of who touched the account.
Summarised from real scored signals in PainHunt's database. We link back to sources rather than republish posts.
The same playbooks · Available any time
PainHunt gives you the same data and frameworks 100 HK founders saw live — no event ticket required.
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