Is ketone breath analyzer profitable to sell on Amazon United States?

The niche generates $151K/yr across 25 tracked products. 4 of 17 products launched in the last 360 days are still selling. 90-day search growth is -27.8%. Flapen's verdict: Worth a look (54/100).

How competitive is the ketone breath analyzer niche?

10 brands and 17 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 69% of demand.

What do buyers complain about in ketone breath analyzer?

Top complaints mined from reviews: Functionality-Overall, Accuracy-Overall, Measurement/Reading Accuracy. The return rate is 2.1%.

When does demand for ketone breath analyzer peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the ketone breath analyzer niche?

Listings span $10.12–$142.48; the average listing price is $58.20 (sweet spot $15–$100). The average incumbent carries 1,873 reviews — the moat a new listing must climb.

Ketone Breath Analyzer

Worth a look

Shows beatable incumbent ratings (3.6★), but soft demand (-27.8% this quarter) keeps it on the watch list.

Quality gap

Incredible3.6★

avg incumbent rating — lower means beatable quality

Avg price

Great$58.20

avg listing price — sweet spot $15–$100

Returns

Good2.1%

return rate — above 5% kills the launch gate

Competition

Good45%

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

Price range

Good$10.12–$142.48

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

Brand share

Good69%

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

Conversion

Okay3.8%

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

Review moat

Okay1,873.28

avg incumbent reviews — the moat a new listing must climb

Market size

Okay$151K

$151K/yr · 68K searches

Growth

Bad-27.8%

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

Signals No Dominant Brand Quality Gap High Price Out of Stock

Is ketone breath analyzer profitable on Amazon?

According to Flapen's Amazon United States niche tracking, ketone breath analyzer is a $151K/yr Amazon United States market (68K searches/yr). The top 5 brands hold 69% of demand. Verdict: Worth a look — 54/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

ketone breath analyzer market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 3K–3K; avg 0–100/product
Revenue / yr: $146K–$175K; units × avg price
Conversion rate: 3.8%
Avg BSR: #60
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 55.1%
Avg brand age: 57 months
Avg seller age: 172 days

Competition: brands, sellers & click share

The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.

Brands

10 falling

Sellers

Top-5 brand share

69%

Top 20: 100%

Top-5 click share

45%

Top 20: 95%

Open market

19%

KETOSCAN18%
Aunnhon14%
Anntoo13%
Yugoo13%
JASTEK12%
BreePoot12%

ketone breath analyzer demand & seasonality

Weekly Amazon search volume, last 104 weeks — -27.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top ketone breath analyzer search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

ketone breath analyzer5K/yr +30.5%4.3% conv.
keto breath meter9K/yr -31.8%3.7% conv.
biosense breath ketone meter7K/yr -11.9%1.0% conv.
breath ketone meter7K/yr -22.2%3.3% conv.
ketone breath meter11K/yr -61.2%3.5% conv.
ketosis breath meter6K/yr -27.4%3.3% conv.
keto breath meter for ketosis6K/yr -17.7%4.7% conv.
ketonix3K/yr -27.3%2.6% conv.
ketone meter breath3K/yr -43.4%3.8% conv.
keto breath2K/yr -20.4%1.2% conv.

All search terms

Top ketone breath analyzer products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

KETOSCAN Mini V2 Breath Ketone Meter | Non-Invasive Ketone Monitor Keto & Low Carb Diet Tracker Fat Metabolism & Ketosis

KETOSCAN$142.484.0★1,005 rev

Ketosis Meter Home Ketone Breath Analyzer Professional Ketone Breath Monitors Tester - Ketone Breath Meter & Monitoring for Testing ketosis with 10 Mouthpieces - Monitor Your Ketosis Status -White

Aunnhon$47.993.2★4 rev

Ketone Breath Analyzer & Ketosis Meter Portable High-Accuracy Ketosis Breath Tester Professional Ketone Breath Meter for Keto Lifestyle & Fitness Enthusiasts

CSHope$74.333.7★12 rev

Ketone Meter Professional Ketosis Breath Tester for Tracking Ketosis Levels - Portable High Accuracy Ketone Breath Analyzer with 10 Replaceable Mouthpieces

Anntoo$44.484.6★3 rev

Ketone Breath Monitors Analyzer Professional Breath Ketosis Meter for Ketosis Testing Portable Advanced Breath Ketone Tester with 10 Replaceable Mouthpieces Perfect for Tracking Your Ketones

Anntoo$44.303.3★3 rev

Newest

by launch date

Ketone Meter Professional Breath Ketosis Meter - Portable Home Ketone Breath Tester with 10 Mouthpieces | Advanced Ketone Breath Analyzer for Ketosis Testing

JASTEK$39.4125 rev

2mo ago

Ketone Meter Professional Ketosis Breath Tester for Tracking Ketosis Levels - Portable High Accuracy Ketone Breath Analyzer with 10 Replaceable Mouthpieces

Anntoo$44.483 rev

2mo ago

Ketosis Meter Professional Ketone Breath Monitor Tester - High-Accuracy Breath Ketone Meter for Acetone Check | Portable Ketone Breath Analyzer & Tester for Precise Ketosis Tracking in Your Breath

Yugoo$71.811 rev

3mo ago

Home Breath Ketosis Meter Professional Breath Ketosis Tester - Portable Ketone Breath Analyzer with 10 Mouthpieces | Ketone Breath Meter for Keto Tracking

BreePoot$45.903 rev

5mo ago

Ketone Meter & Ketone Breath Analyzer - Professional Breath Ketosis Tester - Advanced Ketone Breath Analyzer for Acetone Check | Breath Ketosis Meter to Track Fitness Progress & Ketosis Goals

Yugoo$74.613 rev

5mo ago

What reviews say buyers love and hate about ketone breath analyzer

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

What buyers love

Ease Of Use19%

“easy to carry”

Accuracy-Overall15%

“ACCURATE AND EASY TO USE”

Advertised Vs Actual Product9%

“As described”

Quality-Overall8%

“Excellent product”

Value For Money8%

“Worth it”

Health Monitoring6%

“Great way to track our ketones”

Efficiency5%

“Does the job”

Blood Sugar Level3%

“Thank you to Keto Mojo, it helps me control better my ketos and glucose”

Instructions/User Manual/Troubleshooting2%

“it is easy to use once you go over the directions carefully”

Breathability2%

“Easy to use breathalyzer”

What buyers complain about

Functionality-Overall17%

“Did not work”

Accuracy-Overall14%

“Not at all accurate”

Measurement/Reading Accuracy12%

“Not for accurate readings”

Value For Money9%

“Crazy Expensive”

Color9%

“Color is off”

Instructions/User Manual/Troubleshooting4%

“No help in the directions eg Blue is this”

Quality-Overall3%

“This is either poor quality control, a mfg”

Durability3%

“Stop working after 1 week”

Ease Of Use3%

“Difficult to use”

Blood Sugar Level3%

“Faulty Glucose Strips”

Top return reasons

Functionality-Overall21%

Measurement/Reading Accuracy21%

Accuracy-Overall10%

Breathability9%

Advertised Vs Actual Product6%

Value For Money4%

Color3%

Certifications3%

Ease Of Use2%

Blood Sugar Level2%

Common ketone breath analyzer questions

Is ketone breath analyzer profitable to sell on Amazon United States?: The niche generates $151K/yr across 25 tracked products. 4 of 17 products launched in the last 360 days are still selling. 90-day search growth is -27.8%. Flapen's verdict: Worth a look (54/100).
How competitive is the ketone breath analyzer niche?: 10 brands and 17 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 69% of demand.
What do buyers complain about in ketone breath analyzer?: Top complaints mined from reviews: Functionality-Overall, Accuracy-Overall, Measurement/Reading Accuracy. The return rate is 2.1%.
When does demand for ketone breath analyzer peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the ketone breath analyzer niche?: Listings span $10.12–$142.48; the average listing price is $58.20 (sweet spot $15–$100). The average incumbent carries 1,873 reviews — the moat a new listing must climb.