Is heart rate monitor profitable to sell on Amazon United States?

The niche generates $17.9M/yr across 6 tracked products. 90-day search growth is +2.9%. Flapen's verdict: Skip it (42/100).

How competitive is the heart rate monitor niche?

4 brands and 35 sellers compete. The top 5 products take 96% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in heart rate monitor?

Top complaints mined from reviews: Connectivity-Overall, Functionality-Overall, Durability. The return rate is 4.5%.

When does demand for heart rate monitor peak?

Demand is steady year-round — the busiest month runs 1.7× the quietest.

What does it cost to enter the heart rate monitor niche?

Listings span $73.89–$167.90; the average listing price is $108.72 (sweet spot $15–$100). The average incumbent carries 19,731 reviews — the moat a new listing must climb.

Heart Rate Monitor

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Market size

Incredible$17.9M

$17.9M/yr · 3.4M searches

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Avg price

Good$108.72

avg listing price — sweet spot $15–$100

Conversion

Good4.9%

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

Returns

Okay4.5%

return rate — above 5% kills the launch gate

Growth

Okay+2.9%

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

Price range

Okay$73.89–$167.90

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

Review moat

Bad19,731.33

avg incumbent reviews — the moat a new listing must climb

Competition

Bad96%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals High Price

Is heart rate monitor profitable on Amazon?

According to Flapen's Amazon United States niche tracking, heart rate monitor is a $17.9M/yr Amazon United States market (3.4M searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 42/100.

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

heart rate monitor market size & sales

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

Units sold / yr: 200K–250K; avg 25,000–30,000/product
Revenue / yr: $21.7M–$27.2M; units × avg price
Conversion rate: 4.9%
Avg BSR: #101
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 21.1%
Avg brand age: 35 months
Avg seller age: 165 days

Competition: brands, sellers & click share

The top 5 products capture 96% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 rising

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

96%

Top 20: 100%

Open market

AliveCor80%
POLAR10%
Garmin5%
COROS4%
Open — no brand owns it (0%)

heart rate monitor demand & seasonality

Weekly Amazon search volume, last 104 weeks — +2.9% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.7×

Open Trend

Top heart rate monitor search terms shoppers use

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

heart rate monitor991K/yr -0.0%0.6% conv.
kardiamobile ekg monitor450K/yr +11.3%7.5% conv.
kardia mobile heart monitor269K/yr +9.4%7.2% conv.
heart monitor222K/yr -12.4%1.4% conv.
kardia214K/yr +7.6%5.8% conv.
ekg monitoring devices fda approved161K/yr -8.5%4.0% conv.
ekg141K/yr -1.4%2.2% conv.
kardia mobile145K/yr +14.2%6.9% conv.
ekg monitor102K/yr +0.2%2.4% conv.
kardiamobile 6l79K/yr +41.3%6.5% conv.

All search terms

Top heart rate monitor 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 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

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

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

Garmin HRM 600 Premium Heart Rate Monitor Accurate Heart Rate and HRV Data Running Dynamics Stand-Alone Activity Recording M-XL

Garmin$167.904.6★1,073 rev

KardiaMobile Card Credit-Card Sized EKG Medical-Grade & FDA-Cleared Personal Heart Monitor Bluetooth Enabled On-The-Go Check-Up Anywhere Compatible with Most Smartphones No Subscription Required

AliveCor$89.414.2★3,594 rev

Newest

by launch date

Garmin HRM 600 Premium Heart Rate Monitor Accurate Heart Rate and HRV Data Running Dynamics Stand-Alone Activity Recording M-XL

Garmin$167.901,073 rev

1y ago

COROS Heart Rate Monitor Comfort Easy to wear Auto-wear Detection Advanced Sensor Precise Data Bluetooth 38 Hours Battery Life Connects up to 3 Devices at Once for Run and Bike-Grey

COROS$77.882,292 rev

2y ago

KardiaMobile Card Credit-Card Sized EKG Medical-Grade & FDA-Cleared Personal Heart Monitor Bluetooth Enabled On-The-Go Check-Up Anywhere Compatible with Most Smartphones No Subscription Required

AliveCor$89.413,594 rev

4y 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

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 reviews say buyers love and hate about heart rate monitor

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

What buyers love

Ease Of Use24%

“easy to operate”

Quality-Overall13%

“quality of product seems to be accurate in its readings”

Efficiency10%

“It does work”

Value For Money8%

“Worth every penny”

Advertised Vs Actual Product6%

“As advertised”

Compatibility-Overall5%

“Pairing with your phone is straightforward”

Software/Application5%

“The app is great”

Connectivity-Overall4%

“Easy to connect”

Comfort-Overall3%

“Comfortable”

Portability2%

“This is a portable”

What buyers complain about

Connectivity-Overall14%

“Never connected”

Functionality-Overall12%

“Questionable functionality”

Durability10%

“Short life poor CS”

Value For Money8%

“Cost”

Software/Application6%

“Each of the 2 apps is poorly made”

Compatibility-Overall6%

“Not compatible”

Ease Of Use5%

“Difficult to use”

Battery Life5%

“The battery life is also horrible”

Advertised Vs Actual Product4%

“FALSE advertising”

Quality-Overall4%

“garbage, stopped working after a week”

Top return reasons

Functionality-Overall18%

Connectivity-Overall15%

Compatibility-Overall11%

Measurement/Reading Accuracy9%

Advertised Vs Actual Product9%

Value For Money6%

Size-Overall6%