See which niches are worth a design before you make one.
NicheLens is a research tool for print-on-demand sellers. It splits a niche into sub-niches, ranks keywords from marketplace signals, explains why each sub-niche is worth your time, and checks for trademark risk before you start designing.
Private beta — coming soon
Guessing is the expensive part
Niches picked on instinct
A design takes hours. Deciding what to design often takes a few minutes and a hunch.
Research by scrolling
Hours go into browsing marketplace listings to guess what sells, and the results are out of date by the time you finish.
Trademarks found too late
A phrase that looks generic turns out to be registered, and the listing comes down after the work is done.
Seasons that arrive early
By the time a seasonal niche looks obvious, sellers who started weeks earlier already hold the first page.
How it works
Pick a niche
Start from a broad niche. NicheLens splits it into sub-niches and scans each one separately.
Read the signals
NicheLens reads marketplace signals for every sub-niche. An AI model suggests keywords, fixed scoring rules rank them, and each sub-niche comes with a short written reason it is worth doing.
Check, then decide
Run the shortlist past the trademark check, then choose what to design.
What it does
Niche map
A broad niche broken into sub-niches, each scanned on its own. An AI model writes a short reason why each sub-niche is worth designing for.
Keyword ranking
An AI model suggests keywords for each sub-niche. Plain scoring rules, not a model, decide the order, so the same inputs always give the same ranking.
Keyword amplifier
Start from designs that have already sold and expand them into related keywords for the next design.
Trend Radar
Rising niches next to the seasonal calendar, so you can start before a season peaks. An AI model classifies the incoming signals.
Trademark guard
A blocklist and an allowlist screen keywords before they reach a design. You can add your own terms, and pull in a newer version of the list when one is available.
Performance tracking
Connect Google Analytics and follow each design from views through to orders.
Built on Claude
Today, the internal tool can run on Claude models for three steps: generating keywords, writing the reason behind each sub-niche, and classifying Trend Radar signals.
The private beta is being built on the Claude API.
NicheLens is an independent product. It is not affiliated with or endorsed by Anthropic.
Where it stands
Now (Current stage)
An internal tool, in use in the founder's own print-on-demand store since April 2026.
Next
A private beta for people on the waitlist.
Later
Open to everyone.
No dates are set yet.
Who's building it
NicheLens is built by Lam Phuoc Hung, a solo founder based in Vietnam. He started it in 2026 as the research side of the tool he uses to run his own print-on-demand store.
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