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50

ketone meter

Worth a look

Shows a sweet-spot price point ($26.52 avg), but soft demand (-19.4% this quarter) keeps it on the watch list.

Market size 30Growth 15Conversion 44Competition 31Returns 94Price range 78Avg price 95Brand share 44Review moat 47Quality gap 90

Avg price

Incredible£26.52

avg listing price — sweet spot $15–$100

Returns

Great1.1%

return rate — above 5% kills the launch gate

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Price range

Great£5.93–£49.83

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Okay1,829.68

avg incumbent reviews — the moat a new listing must climb

Conversion

Okay3.5%

search→purchase rate — share of searches ending in a sale

Brand share

Okay79%

top-5 brand share — brands hold most of the demand

Competition

Okay67%

top-5 click share — leaders hold, buyers still browse

Market size

Okay£133K

£133K/yr · 141K searches

Growth

Bad-19.4%

90-day search growth — must beat 0% to launch

According to Flapen's Amazon United Kingdom niche tracking, ketone meter is a £133K/yr Amazon United Kingdom market (141K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Jan–Feb–Nov. Verdict: Worth a look — 50/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

ketone meter market data

Units sold / yr
4K–5K
avg 250–500/product
Revenue / yr
£106K–£133K
units × avg price
Conversion rate
3.5%
Avg BSR
#134
Page quality
0%
Prime
95%
Sponsored
74%
Out of stock
17.9%
Avg brand age
61 months
Avg seller age
184 days

Competition & brand share

The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.

Brands

13 rising

Sellers

33

Top-5 brand share

79%

Top 20: 100%

Top-5 click share

67%

Top 20: 100%

Open market

17%

  • Keto-Mojo29%
  • FoviFlxy21%
  • KetoBM18%
  • Gemusve6%
  • Valuemed5%
  • NKD Living4%
  • Open — no brand owns it (7 brands, 17%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -19.4% search growth over the last 90 days.
9K7KSpike '24Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan, Feb, Nov · busiest ÷ quietest = 2.1×

Top ketone meter search terms

  • ketone test monitor34K/yr
  • ketone meter29K/yr
  • keto mojo15K/yr
  • ketone monitor10K/yr
  • blood ketone meter7K/yr
  • ketones monitor6K/yr
  • ketosis monitor5K/yr
  • keto-mojo6K/yr
  • keto mojo meter5K/yr
  • glucose and ketone monitor kit3K/yr
All search terms

Top ketone 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.

0%10%£13K20%£27K30%£40K40%£53K1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 19 tracked products in this niche — three views at once, no toggling.

What buyers say about ketone meter

What buyers praise and complain about, mined from review topics.

What buyers love

Ease Of Use31%

“This test kit is easy to use”

Quality-Overall17%

“Good reliable piece of equipment”

Value For Money15%

“It's reasonably priced”

Advertised Vs Actual Product8%

“It is just as advertised”

Efficiency5%

“Very efficient”

Instructions/User Manual/Troubleshooting4%

“Lots of useful info included”

Touch/Button Controls1%

“Two buttons for so many functions”

Strength1%

“Effective machine”

Urinary Bladder Health1%

“These urine test strips work”

Accuracy-Overall1%

“Love these very accurate:-)”

What buyers complain about

Value For Money22%

“Too expensive to be faulty like this”

Functionality-Overall17%

“Nothing comes up on the screen”

Quality-Overall15%

“Poor quality control”

Instructions/User Manual/Troubleshooting10%

“instructions poor”

Measurement/Reading Accuracy6%

“I tried every time to do multiple readings which is harder than it should be because the 90 count down to 'preheat' the sensor must be done every single time”

Color6%

“Not impressed, never changed colour, at any time”

Color Fading/Discoloration3%

“Discoloured and doesnt work, no response from seller”

Durability3%

“Doesn't last long”

Advertised Vs Actual Product2%

“This product is NOT nhs approved its false advertising”

Blood Sugar Level2%

“from a sealed pack there is a glucose test strip missing”

Top return reasons

Functionality-Overall43%
Defective Material/Parts11%
Advertised Vs Actual Product6%
Measurement/Reading Accuracy5%
Display-Overall4%
Instructions/User Manual/Troubleshooting4%
Assembly/Installation3%
Compatibility-Overall3%
Ease Of Use3%
Value For Money2%

Common questions

Is ketone meter profitable to sell on Amazon United Kingdom?
The niche generates £133K/yr across 19 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -19.4%. Flapen's verdict: Worth a look (50/100).
How competitive is the ketone meter niche?
13 brands and 33 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 79% of demand.
What do buyers complain about in ketone meter?
Top complaints mined from reviews: Value For Money, Functionality-Overall, Quality-Overall. The return rate is 1.1%.
When does demand for ketone meter peak?
Demand peaks in Jan–Feb–Nov; the busiest month runs 2.1× the quietest.
What does it cost to enter the ketone meter niche?
Listings span £5.93–£49.83; the average listing price is £26.52 (sweet spot $15–$100). The average incumbent carries 1,830 reviews — the moat a new listing must climb.