par meter
Skip itSoft demand (-25.7% this quarter) — this niche doesn't clear our bar today.
Avg price
Great$73.05avg listing price — sweet spot $15–$100
Review moat
Great370.28avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Market size
Good$504K$504K/yr · 181K searches
Price range
Good$12.42–$164.96cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Okay3.8%search→purchase rate — share of searches ending in a sale
Returns
Okay3.7%return rate — above 5% kills the launch gate
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Competition
Okay66%top-5 click share — leaders hold, buyers still browse
Growth
Bad-25.7%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, par meter is a $504K/yr Amazon United States market (181K searches/yr). The top 5 brands hold 83% of demand. Verdict: Skip it — 46/100.
Data updated Jul 30, 2026 · scored weekly · How we score niches
par meter market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- $365K–$438K
- units × avg price
- Conversion rate
- 3.8%
- Avg BSR
- #65
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 89%
- Out of stock
- 4.5%
- Avg brand age
- 52 months
- Avg seller age
- 186 days
Competition & brand share
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.Brands
14 falling
Sellers
31
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
66%
Top 20: 100%
Open market
14%
- DANOPLUS26%
- VABIRA19%
- URCERI18%
- AquaHorti13%
- Lightray7%
- BTMETER3%
- Open — no brand owns it (8 brands, 14%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -25.7% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top par meter search terms
- par meter68K/yr
- ppfd meter41K/yr
- par meter for reef tank20K/yr
- ppfd meter for led grow light14K/yr
- par meter for led grow lights15K/yr
- par meter for plants4K/yr
- aquarium par meter6K/yr
- par light meter4K/yr
- lab photometers & light meters2K/yr
- quantum par meter3K/yr
Top par meter 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 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Quantum PAR Meter Full-Spectrum High Precision PPFD Tester for Photosynthetic Activity of Indoor and Outdoor Plants 400-700nm Light Lux Tester
DANOPLUS$79.414.8★410 rev
Light Meter Digital Illuminance Meter Handheld Ambient Temperature Measurer Range up to 200 000 Lux Luxmeter with 4 Digit Color LCD Screen
URCERI$27.914.4★2,943 rev
VBR-100 Quantum PAR Meter 6000umol/(s) RGB PAR Breakdown PPFD Distribution Mapping Bluetooth Free App Sensor Name(VBR-100 Plus) No Spectrum Selection
VABIRA$56.774.4★424 rev
VBR-Aqua IP68 PAR Meter for Aquarium Reef.R G B PAR Seperately.with a 3FT Telescopic Rod
VABIRA$126.534.5★166 rev
AH-Quantuv PAR Meter for Grow Lights PPFD Meter 400-750nm with UVA Measurement 320-400nm Shows PAR Breakdown of Blue Green Red Records PAR & UVA for Light Distribution Mapping
AquaHorti$67.614.4★161 rev
Newest
by launch date
PAR (PPFD) Light Meter Clip for LED Grow Lights Precision Diffuser with MoeuPLTest iOS APP Full Spectrum + 660nm Included Free
EvoDevice$29.598 rev
Lightray Mobile Light- and PAR Meter | Smartphone-Based PPFD DLI Illuminance Meter with Photone App
Lightray$38.4972 rev
DANOPLUS PAR Meter Par Meter for Reef Tank IP68 Waterproof Aquarium PAR Meter 400-700nm Spectral Range PPFD Meter Data Logger 37 Telescopic Pole 79 Sensor Cable Included
DANOPLUS$122.0830 rev
PAR Meter for LED Grow Lights High Precision and Split Design PPFD Meter with 400-700nm RangePar Light Meter for Plants and Greenhouse
Elaphodus$118.6955 rev
Mcbazel Digital Illuminance Light Meter Photometer Light Intensity Sense Tester with LCD Display Lux Meter Range up to 200 000 Lux for Grow Plants/Photography/Indoor/Garden
Mcbazel$12.75753 rev
Trending
90-day click momentumPAR (PPFD) Light Meter Clip for LED Grow Lights Precision Diffuser with MoeuPLTest iOS APP Full Spectrum + 660nm Included Free
EvoDevice$29.594.1★
BTMETER Digital Illuminance Light Meter - Handheld Candles Meter BT-881E
BTMETER$34.904.4★
AH-Reef PAR Meter Test PPFD UVA w/m Waterproof Sensor Show R G B% in Aquarium Light.Record PAR | UVA Distribution
AquaHorti$113.014.3★
Lightray Mobile Light- and PAR Meter | Smartphone-Based PPFD DLI Illuminance Meter with Photone App
Lightray$38.494.5★
AH-Quantuv PAR Meter for Grow Lights PPFD Meter 400-750nm with UVA Measurement 320-400nm Shows PAR Breakdown of Blue Green Red Records PAR & UVA for Light Distribution Mapping
AquaHorti$67.614.4★
What buyers say about par meter
What buyers praise and complain about, mined from review topics.What buyers love
“Good price”
“Easy to use”
“Overall, a great tool for the price with solid performance”
“Works as advertised”
“Works perfectly”
“Now, they get the right amount of light and look amazing”
“I highly recommend this product It does not work with a phone case on iPhones though”
“has been dependable during regular use”
“Battery life hasnt been an issue”
“however the manual explains it all quite well”
What buyers complain about
“Expensive for what it is”
“Did not even turn on”
“my primary complaint with this is that it doesn't display PPFD -- what it does display is PAR”
“It is labeled and marketed wrong”
“That's my 1 and only complaint and its a deal breaker”
“died after 2.5 years”
“Instructions were terrible”
“Probably manufacturer's fault”
“Color doesn't have a temperature”
“The fit is also very awkward”
Top return reasons
Common questions
- Is par meter profitable to sell on Amazon United States?
- The niche generates $504K/yr across 18 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -25.7%. Flapen's verdict: Skip it (46/100).
- How competitive is the par meter niche?
- 14 brands and 31 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in par meter?
- Top complaints mined from reviews: Value For Money, Functionality-Overall, Display-Overall. The return rate is 3.7%.
- When does demand for par meter peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the par meter niche?
- Listings span $12.42–$164.96; the average listing price is $73.05 (sweet spot $15–$100). The average incumbent carries 370 reviews — the moat a new listing must climb.