We find the products that will actually sell — then handle localization, compliance, and listing for you.
We currently support the countries and channels below, and we're expanding coverage as we move toward full launch.
More countries and channels are on the way.
Need a channel we don't support yet? Let us know!
Will This Product Actually Sell?
Korea and Japan are both crowded already — will this product really sell?
Learn moreMargins, Ad Spend, Market Research… Now What?
Margins, ad spend, market research — you don't have to dig through it all yourself.
Learn moreYou don't need more guesswork. You need
validated data.
Data analysis, regulations, pricing, translation — PreSelling handles what used to take days.
You just decide.
PreSelling collects real data and analyzes only on that evidence, one step at a time.
Validate market demand with real search volume and trend data.
Analyze local pricing and profit margins.
Evaluate competitors and identify your product's weaknesses.
Check country-specific regulations and certification requirements.
Generate localized product pages and translations.
Publish to multiple sales channels after validation.
RAG AI Agents
General AI can sound convincing and still be wrong. For sellers, trust matters.
PreSelling only judges on evidence — and once you pass verification, it carries you through to listing.
| General AI ChatGPT · Gemini |
DIY Research / Agency People · Time |
PreSelling Verify + List |
|
|---|---|---|---|
| Data Source | Trained memory · prone to hallucination | Manually collected, takes time | Real, live local data collection |
| Output Format | Conversational answers | Reports (subjective) | Score, action items, evidence |
| Regulation Check | Uncertain | Requires hiring an expert | RAG-based regulation review |
| Localized Content | Translation only | Outsourcing costs | Auto-generated product pages & copy |
| Channel Listing | Not possible | Manual, repeated for each channel | One-click multi-channel listing |
| Time Required | Instant but unverifiable | Days to weeks | Under an hour |
General AI tools like ChatGPT and Gemini answer from trained memory, so they can sound convincing while still being wrong.
PreSelling doesn't make things up. 7 RAG AI agents collect real local data on search volume, competition, pricing, and regulations, then analyze in 6 steps based only on that evidence.
You get a score, action items, and evidence — not a conversational answer — and you can ask the agents directly whenever you have a question.
We're launching a closed beta on July 6, 2026.
During the beta, we're opening supported channels one at a time, and we'll keep expanding countries and channels toward full launch.
Enter a product name and get your score and evidence in about 3 minutes.
From verification to localization and channel listing, everything finishes in under an hour.
Yes, it's free right now! No card required, so go ahead and check your product with no risk.
For domestic launches, you can diagnose any product category with no restrictions.
For overseas diagnosis (Qoo10), K-beauty products are supported now, with more categories coming soon.
Right now you can list on Naver Smart Store, Coupang, and 11st in Korea, and Qoo10 in Japan.
At full launch, we'll expand to Rakuten and Amazon in Japan, Amazon in the US, Shopee and Lazada in Southeast Asia, and your own store via Shopify and Cafe24.
The product information you enter is used only for diagnosis and is never shared externally.
Key data, including personal information, is encrypted for storage and transmission.
UserWhy works with trusted institutions and partners.
Resident company, Seongnam Industry Promotion Agency
Certified as a Pre-Venture Company
Supported by Korea Technology Finance Corporation
Operates a KOITA-certified in-house R&D center
