Complex analysis, handled by AI.
Execution, driven by people.

Our story

Founded on experience,
proven through execution.

My first app, built over six months on gut feel, made zero sales. When I followed real market signals instead, I launched a commerce platform within a month. I built UserWhy so sellers can see the market before they commit, not after. It's built to give every seller what I learned the hard way: check the market before you stock.

CEO Sihun Lee profile photo
Sihun Lee (Tom Lee)
Founder & CEO
10 years at Samsung SDS and eBay & Gmarket, startup CTO, Master's in AI

UserWhy's journey

2026
Nov Upcoming

Attending SLUSH Finland

Jul

Moved into Keen Tower, Bundang

PreSelling Closed Beta launch

Jun

Filed PCT international patent

Established in-house R&D center
R&D Center

May

Filed additional IP applications
1 technology patent · 3 trademarks

Apr

PreSelling Closed Alpha launch
AI-powered product demand verification service

Mar

Incorporated UserWhy Co., Ltd.
UserWhy Co., Ltd. · Seongnam, Gyeonggi-do

2025
Dec

Patent filed
LLM-based no-code market viability verification method and system

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