Is ecg profitable to sell on Amazon United States?

The niche generates $88K/yr across 6 tracked products. 90-day search growth is +9.8%. Flapen's verdict: Skip it (28/100).

How competitive is the ecg niche?

4 brands and 24 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in ecg?

Top complaints mined from reviews: Connectivity-Overall, Functionality-Overall, Durability. The return rate is 4.9%.

When does demand for ecg peak?

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

What does it cost to enter the ecg niche?

Listings span $73.89–$155.78; the average listing price is $113.38 (sweet spot $15–$100). The average incumbent carries 19,223 reviews — the moat a new listing must climb.

ecg

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Avg price

Good$113.38

avg listing price — sweet spot $15–$100

Growth

Okay+9.8%

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

Returns

Okay4.9%

return rate — above 6% kills the launch gate

Price range

Okay$73.89–$155.78

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

Market size

Bad$88K

$88K/yr · 44K searches

Conversion

Bad1.8%

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

Review moat

Bad19,222.5

avg incumbent reviews — the moat a new listing must climb

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, ecg is a $88K/yr Amazon United States market (44K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 28/100.

Data updated Jul 17, 2026 · scored weekly · How we score niches

ecg market data

Units sold / yr: 750–1K; avg 0–100/product
Revenue / yr: $85K–$113K; units × avg price
Launch success: —; 0 of 0 new (360d)
Conversion rate: 1.8%
Avg BSR: #14
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 15.4%
Avg brand age: 37 months
Avg seller age: 167 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

AliveCor70%
EMAY15%
POLAR10%
Omron5%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 63 weeks — +9.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top ecg search terms

ecg40K/yr +8.8%1.0% conv.
ekg monitoring devices4K/yr +27.4%1.5% conv.
afib heart monitor942/yr +0.7%2.6% conv.

All search terms

Top ecg 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.

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

All 6 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

KardiaMobile 1-Lead EKG Monitor Medical-Grade FDA-Cleared Personal Heart Monitor Detects Normal AFib & Arrhythmias 30 Second Results Works with Most Smartphones HSA&FSA Eligible

AliveCor$73.894.4★83,279 rev

Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth Waterproof HR Sensor for Men and Women Black M-XXL

POLAR$95.894.2★26,663 rev

EMAY 6L Portable ECG Monitor | Record ECG and Heart Rate in 6 Channels | Compatible with Smartphone and PC | No Subscription Required

EMAY$155.784.6★1,352 rev

KardiaMobile 6L Max EKG Monitor Includes One-Year KardiaCare Membership FDA-Cleared Heart Monitor Medical-Grade Results in 30 Seconds Unlimited Recordings Works with Smartphones and Tablets

AliveCor$147.354.1★1,487 rev

EMAY Portable ECG Monitor | Record ECG and Heart Rate | Compatible with Smartphone and PC

EMAY$84.454.4★430 rev

Newest

by launch date

EMAY 6L Portable ECG Monitor | Record ECG and Heart Rate in 6 Channels | Compatible with Smartphone and PC | No Subscription Required

EMAY$155.781,352 rev

3y ago

EMAY Portable ECG Monitor | Record ECG and Heart Rate | Compatible with Smartphone and PC

EMAY$84.45430 rev

3y ago

KardiaMobile 6L Max EKG Monitor Includes One-Year KardiaCare Membership FDA-Cleared Heart Monitor Medical-Grade Results in 30 Seconds Unlimited Recordings Works with Smartphones and Tablets

AliveCor$147.351,487 rev

5y ago

OMRON Complete 2-in-1 Blood Pressure Monitor + EKG for Home Use & Upper Arm Blood Pressure Cuff - #1 Doctor & Pharmacist Recommended Brand - Clinically Validated - Connect App

Omron$122.942,124 rev

7y ago

Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth Waterproof HR Sensor for Men and Women Black M-XXL

POLAR$95.8926,663 rev

7y ago

What buyers say about ecg

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

What buyers love

Ease Of Use31%

“easy to read”

Quality-Overall12%

“I have found this to be a very good quality monitor”

Efficiency8%

“It does work”

Value For Money6%

“Good price”

Advertised Vs Actual Product6%

“As advertised”

Software/Application5%

“the app is simple also”

Connectivity-Overall3%

“connects easily”

Compatibility-Overall3%

“Pairing with your phone is straightforward”

Portability2%

“Portable”

Instructions/User Manual/Troubleshooting2%

“Good instructions”

What buyers complain about

Connectivity-Overall10%

“Never connects”

Functionality-Overall10%

“Questionable functionality”

Durability8%

“Short life poor CS”

Value For Money8%

“It's more expensive”

Ease Of Use6%

“Difficult to use”

Software/Application6%

“App doesn't work”

Measurement/Reading Accuracy6%

“Inaccurate”

Compatibility-Overall5%

“Compatibility Problems”

Advertised Vs Actual Product4%

“Not as advertised”

Battery Life4%

“The battery life is also horrible”

Top return reasons

Functionality-Overall19%

Connectivity-Overall12%

Measurement/Reading Accuracy12%

Advertised Vs Actual Product10%

Compatibility-Overall9%