pupilometer
Skip itA small market ($50K/yr) — this niche doesn't clear our bar today.
Review moat
Incredible67.79avg incumbent reviews — the moat a new listing must climb
Avg price
Great$80.42avg listing price — sweet spot $15–$100
Price range
Good$6.50–$126.41cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Conversion
Okay3.9%search→purchase rate — share of searches ending in a sale
Returns
Okay3.1%return rate — above 5% kills the launch gate
Growth
Okay+5.9%90-day search growth — must beat 0% to launch
Competition
Bad73%top-5 click share — a locked-up shelf
Brand share
Bad91%top-5 brand share — brand-locked demand
Market size
Bad$50K$50K/yr · 16K searches
According to Flapen's Amazon United States niche tracking, pupilometer is a $50K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 91% of demand. Verdict: Skip it — 41/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
pupilometer market data
- Units sold / yr
- 500–750
- avg 0–100/product
- Revenue / yr
- $40K–$60K
- units × avg price
- Conversion rate
- 3.9%
- Avg BSR
- #234
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 7.3%
- Avg brand age
- 43 months
- Avg seller age
- 227 days
Competition & brand share
The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 falling
Sellers
11
Top-5 brand share
91%
Top 20: 100%
Top-5 click share
73%
Top 20: 100%
Open market
3%
- Huanyu36%
- AISITESY32%
- Hanchen10%
- Ezyaid6%
- Voinnokal6%
- Eyeapolysis6%
- Open — no brand owns it (1 brand, 3%)
Demand
Weekly Amazon search volume, last 42 weeks — +5.9% search growth over the last 90 days.Top pupilometer products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Huanyu Optical Digital Pupilometer 45-82mm Pupil Meter PD Meter Pupil Distance Meter Optical Instrument CE Approved (LY-9AT)
Huanyu$116.874.3★90 rev
AISITESY Pupilometer Optics Digital Partial Discharge Meter Pupil Distance Meter Pupil Distance Meter Optical Instrument(LY-9AT)
AISITESY$80.454.4★16 rev
Hanchen PD Meter Digital Pupil Distance Meter PD Ruler Pupilometer with Memory Function CE Certificate
Hanchen$56.803.8★100 rev
AISITESY Optical Equipment Pupil Measure PD Meter LY-9C Digital with Pupilometer Pd Puilp Distance Meter
AISITESY$98.134.7★7 rev
Ezyaid PD Ruler with Instruction Manual - Pupillary Distance Ruler for Pupil Distance Measuring PD Measurement Tool for Prescription Eyeglasses Include Eye Care Tips
Ezyaid$6.994.4★477 rev
Newest
by launch date
Optical Digital Pupilometer LED Pupillary Distance Meter Pd Meter with Memory Function Diopter Compensation Pupil Distance Meter Interpupillary Distance Measuring Tool
Voinnokal$76.781 rev
Pupilometer Optical Digital Pupilometer with LCD Display PD Meter for Optometrists
Eyeapolysis$78.830 rev
Optical Vernier PD Ruler: Ophthalmic Pupil Distance Measuring Tool (1 Pack)
Eyeapolysis$6.5048 rev
Optical Digital Pupilometer with Memory Function LCD Display Pupillary Distance Meter Diopter Compensation Pupil Distance Meter PD Measurement Tool
Voinnokal$79.473 rev
VV LIINNCXM Digital Pupilometer PD Meter LCD Display Optical Interpupillary Distance Ophthalmic Measuring Tool
VV LIINNCXM$78.613 rev
Trending
90-day click momentumOptical Digital Pupilometer LED Pupillary Distance Meter Pd Meter with Memory Function Diopter Compensation Pupil Distance Meter Interpupillary Distance Measuring Tool
Voinnokal$76.785.0★
Pupilometer Optical Digital Pupilometer with LCD Display PD Meter for Optometrists
Eyeapolysis$78.830.0★
Huanyu Optical Digital Pupilometer with Memory Function LCD Pupil Distance Meter Diopter Compensation PD Measurement Tool for Eyes CE Approved (LY-9A)
Huanyu$113.754.4★
VV LIINNCXM Digital Pupilometer PD Meter LCD Display Optical Interpupillary Distance Ophthalmic Measuring Tool
VV LIINNCXM$78.615.0★
Optical Vernier PD Ruler: Ophthalmic Pupil Distance Measuring Tool (1 Pack)
Eyeapolysis$6.503.5★
What buyers say about pupilometer
What buyers praise and complain about, mined from review topics.What buyers love
“It did what I expected it to do”
“Useful”
“When that's done I would rate it a 5-star considering its price”
“Works no issues”
“easy to follow instructions”
“Works well”
“the reason I like it so much is very easy to do the vertex distance and the PDS”
“good product”
“effective”
“Saved me a lot of time and effort”
What buyers complain about
“The lines are nearly impossible to see when trying to measure”
“No instructions”
“You can get much better at this price point”
“it's way more difficult to use”
“Cheaply made”
“Questionable build quality”
Top return reasons
Common questions
- Is pupilometer profitable to sell on Amazon United States?
- The niche generates $50K/yr across 14 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +5.9%. Flapen's verdict: Skip it (41/100).
- How competitive is the pupilometer niche?
- 7 brands and 11 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 91% of demand.
- What do buyers complain about in pupilometer?
- Top complaints mined from reviews: Measurement/Reading Accuracy, Instructions/User Manual/Troubleshooting, Value For Money. The return rate is 3.1%.
- What does it cost to enter the pupilometer niche?
- Listings span $6.50–$126.41; the average listing price is $80.42 (sweet spot $15–$100). The average incumbent carries 68 reviews — the moat a new listing must climb.