heart rate monitor
Skip itBrand-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$108.72avg 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 6% kills the launch gate
Growth
Okay+2.9%90-day search growth — must beat 0% to launch
Price range
Okay$73.89–$167.90cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Bad19,731.33avg 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
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 — 43/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
heart rate monitor market data
- Units sold / yr
- 200K–250K
- avg 25,000–30,000/product
- Revenue / yr
- $21.7M–$27.2M
- units × avg price
- Launch success
- —
- 0 of 0 new (360d)
- 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 & brand share
The top 5 products capture 96% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 rising
Sellers
35
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
96%
Top 20: 100%
Open market
0%
- AliveCor80%
- POLAR10%
- Garmin5%
- COROS4%
- Open — no brand owns it (0%)
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×
Top heart rate monitor search terms
- heart rate monitor991K/yr
- kardiamobile ekg monitor450K/yr
- kardia mobile heart monitor269K/yr
- heart monitor222K/yr
- kardia214K/yr
- ekg monitoring devices fda approved161K/yr
- ekg141K/yr
- kardia mobile145K/yr
- ekg monitor102K/yr
- kardiamobile 6l79K/yr
Top heart rate monitor 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 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 dateGarmin 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
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
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
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
Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth Waterproof HR Sensor for Men and Women Black M-XXL
POLAR$95.8926,663 rev
Trending
90-day click momentumGarmin HRM 600 Premium Heart Rate Monitor Accurate Heart Rate and HRV Data Running Dynamics Stand-Alone Activity Recording M-XL
Garmin$167.904.6★
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★
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★
Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth Waterproof HR Sensor for Men and Women Black M-XXL
POLAR$95.894.2★
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★
What buyers say about heart rate monitor
What buyers praise and complain about, mined from review topics.What buyers love
“easy to operate”
“quality of product seems to be accurate in its readings”
“It does work”
“Worth every penny”
“As advertised”
“Pairing with your phone is straightforward”
“The app is great”
“Easy to connect”
“Comfortable”
“This is a portable”
What buyers complain about
“Never connected”
“Questionable functionality”
“Short life poor CS”
“Cost”
“Each of the 2 apps is poorly made”
“Not compatible”
“Difficult to use”
“The battery life is also horrible”
“FALSE advertising”
“garbage, stopped working after a week”
Top return reasons
Common questions
- 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 (43/100).
- 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.