---
title: "Cardio — $423K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/sports-outdoors/cardio"
last_updated: "2026-07-22T20:52:49.231Z"
locale: en
meta:
description: "Niche score 35/100 · $423K/yr market · 379K searches/yr · $125.47 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 35/100 · $423K/yr market · 379K searches/yr · $125.47 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Cardio — $423K/yr Amazon US Niche (2026) - Flapen"
---
# **cardio**
**Skip it**
Weak search conversion (0.9%) — this niche doesn't clear our bar today.
Market size 56Growth 17Conversion 11Competition 24Returns 42Price range 18Avg price 67Brand share 39Review moat 19Quality gap 57
**Avg price**
**Good****$125.47**
avg listing price — sweet spot $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Market size**
**Good****$423K**
$423K/yr · 379K searches
**Returns**
**Okay****3.9%**
return rate — above 6% kills the launch gate
**Brand share**
**Okay****81%**
top-5 brand share — brands hold most of the demand
**Competition**
**Bad****72%**
top-5 click share — a locked-up shelf
**Review moat**
**Bad****14,801.17**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Bad****$19.67–$468.46**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-16.0%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****0.9%**
search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, cardio is a $423K/yr Amazon United States market (379K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Jan–Feb–Dec. Verdict: Skip it — 35/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **cardio market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **$376K–$502K**
- units × avg price
- **Launch success**
- **—**
- 3 of 3 new (360d)
- **Conversion rate**
- **0.9%**
- **Avg BSR**
- **#19**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **35 months**
- **Avg seller age**
- **168 days**
## **Competition & brand share**
The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**14 **▼falling
**Sellers**
**31**
**Top-5 brand share**
**81%**
Top 20: 100%
**Top-5 click share**
**72%**
Top 20: 100%
**Open market**
**16%**
- AliveCor31% - YOSUDA29% - Sunny Health & Fitness10% - GUGTTR7% - ProsourceFit5% - Prodigen3% - Open — no brand owns it (8 brands, 16%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -16.0% search growth over the last 90 days.
35K25KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Feb, Dec · busiest ÷ quietest = 2.3×
[**Open Trend **](https://flapen.com/research/us/sports-outdoors/cardio/trend)
## **Top cardio search terms**
- **cardio**95K/yr-12.3%0.1% conv. - **cardio machines for home**51K/yr-34.2%0.1% conv. - **cardio machine**42K/yr-10.0%0.1% conv. - **knee exercise equipment**29K/yr-4.1%0.0% conv. - **leg strengthening equipment**22K/yr-10.4%0.1% conv. - **senior exercise equipment**24K/yr-20.2%0.0% conv. - **elderly exercise equipment**16K/yr-5.7%0.1% conv. - **exercise equipment for legs**14K/yr-19.9%0.1% conv. - **home cardio**9K/yr-23.4%0.1% conv. - **cardio machines**7K/yr-15.0%0.1% conv. [**All search terms **](https://flapen.com/research/us/sports-outdoors/cardio/search-terms)
## **Top cardio 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%$42K20%$85K30%$127K40%$169K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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**$73.89**4.4★83,279 rev](https://www.amazon.com/dp/B01A4W8AUK) [2**YOSUDA Magnetic Rowing Machine for Home Quiet & Smooth Full Body Workout Rower App Connected Cardio Equipment Apartment-Friendly Indoor Fitness Machine**YOSUDA**$192.53**4.4★1,976 rev](https://www.amazon.com/dp/B0C1VGRX2P) [3**YOSUDA Exercise Bike Brake Pad Stationary Bike for Home with Exclusive App Magnetic Indoor Cycling Bike with 300 lb Weight Capacity Low Noise Tablet Holder and Fitness Courses for Weight Loss Friction-Black**YOSUDA**$189.07**4.4★25,045 rev](https://www.amazon.com/dp/B0BVHN3D72) [4**GUGTTR Under Desk Elliptical Machine Electric Elliptical Leg Exerciser for Seniors Fully Assembled Quiet & Portable Electric Seated Pedal Exerciser with Remote Control & 12 Adjustable Speeds**GUGTTR**$95.47**4.4★6,347 rev](https://www.amazon.com/dp/B0CBT7YZG3) [5**ProsourceFit Exercise Balance Pad Non-Slip Cushioned Foam Mat & Knee Pad for Fitness and Stability Training Yoga Physical Therapy 15.5x12.75 Blue**ProsourceFit**$23.63**4.8★16,937 rev](https://www.amazon.com/dp/B07664K1CW)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**NEWBULIG Exercise Bike with APP Stationary Bikes for Home Workout Bike for Adults & Seniors Cycle Machine Adjustable Height and Resistance Low Noise 265lbs Weight Capacity Black Blue**NEWBULIG**$113.00**88 rev4mo ago](https://www.amazon.com/dp/B0GN1JF3DF) [**Rawaild Yoga Stick Upgraded 5ft Sturdy Steel Mobility Stick Adjustable Exercise Equipment for Stretching Flexibility & Balance Physical Therapy & Posture Correction Shoulder & Back Relaxation**Rawaild**$27.33**91 rev7mo ago](https://www.amazon.com/dp/B0G6D43XGJ) [**GLYLF Vibration Plate Exercise Machine 130 Levels Full Body Workout Vibrating Plate for Lymphatic Drainage Weight Loss 450 Lbs Capacity Shake Platform with Resistance Bands Bluetooth for Women Men**GLYLF**$83.07**1,614 rev11mo ago](https://www.amazon.com/dp/B0FL18LM14) [**YPOO Rowing Machine for Home 350 LB Capacity 16-Level Silent Resistance Magnetic Rowing Machines for Home Foldable Full-Body Workout Compact Rowing Machine for Cardio & Strength with APP Support**YPOO**$170.64**311 rev1y ago](https://www.amazon.com/dp/B0F2M1SH21) [**WKNNOXT Cordless Battle Ropes (2-Pack) Portable Workout Ropes for HIIT Workouts Cardio & Muscle Training Low-Impact Cardio Training Home Gym Equipment for Men & Women(1.9LB x 2) (1.8LB*2)**WKNNOXT**$27.55**230 rev1y ago](https://www.amazon.com/dp/B0FCD8KR9F)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**NEWBULIG Exercise Bike with APP Stationary Bikes for Home Workout Bike for Adults & Seniors Cycle Machine Adjustable Height and Resistance Low Noise 265lbs Weight Capacity Black Blue**NEWBULIG**$113.00**4.6★**▲ 124%**](https://www.amazon.com/dp/B0GN1JF3DF) [**Sunny Health & Fitness Upright Magnetic Elliptical Exercise Machine w/Pulse Sensor for Full Body Cross Training Cardio Machine for Home Optional Long Stride via Bluetooth and App Access Black**Sunny Health & Fitness**$468.46**4.1★**▲ 81%**](https://www.amazon.com/dp/B0CMRN7GPC) [**Rawaild Yoga Stick Upgraded 5ft Sturdy Steel Mobility Stick Adjustable Exercise Equipment for Stretching Flexibility & Balance Physical Therapy & Posture Correction Shoulder & Back Relaxation**Rawaild**$27.33**4.6★**▲ 81%**](https://www.amazon.com/dp/B0G6D43XGJ) [**WKNNOXT Cordless Battle Ropes (2-Pack) Portable Workout Ropes for HIIT Workouts Cardio & Muscle Training Low-Impact Cardio Training Home Gym Equipment for Men & Women(1.9LB x 2) (1.8LB*2)**WKNNOXT**$27.55**4.3★**▲ 78%**](https://www.amazon.com/dp/B0FCD8KR9F) [**YOSUDA Magnetic Rowing Machine for Home Quiet & Smooth Full Body Workout Rower App Connected Cardio Equipment Apartment-Friendly Indoor Fitness Machine**YOSUDA**$192.53**4.4★**▲ 72%**](https://www.amazon.com/dp/B0C1VGRX2P)
**~~View all trending →~~**
## **What buyers say about cardio**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Ease Of Use**14%
*“easy to operate”*
**Quality-Overall**13%
*“Nice solid quality”*
**Value For Money**11%
*“Its affordable”*
**Exercise/Sports Suitability**9%
*“Very good exercise machine”*
**Efficiency**6%
*“The machine works well”*
**Noise Level**5%
*“It's very quiet”*
**Advertised Vs Actual Product**5%
*“As advertised”*
**Size-Overall**3%
*“Good size”*
**Balance/Stability**2%
*“Good for balance”*
**Weight Light**2%
*“It's super lightweight”*
### **What buyers complain about **
**Durability**9%
*“Broke after a few weeks”*
**Functionality-Overall**7%
*“Never worked”*
**Instructions/User Manual/Troubleshooting**5%
*“Instructions are terrible”*
**Value For Money**5%
*“Maybe a little over priced”*
**Assembly/Installation**5%
*“Too Difficult to set up”*
**Size-Overall**4%
*“it is very tight”*
**Noise Level**4%
*“Loud and Squeaky”*
**Quality-Overall**4%
*“Cheaply made”*
**Ease Of Use**3%
*“Difficult to use”*
**Comfort-Overall**3%
*“It is very uncomfortable”*
### **Top return reasons **
**Functionality-Overall**16%
**Size-Overall**12%
**Advertised Vs Actual Product**10%
**Value For Money**6%
**Defective Material/Parts**6%
**Ease Of Use**4%
**Measurement/Reading Accuracy**4%
**Compatibility-Overall**4%
**Connectivity-Overall**3%
**Comfort-Overall**3%
## **Common questions**
- **Is cardio profitable to sell on Amazon United States?**
- The niche generates $423K/yr across 18 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -16.0%. Flapen's verdict: Skip it (35/100).
- **How competitive is the cardio niche?**
- 14 brands and 31 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 81% of demand.
- **What do buyers complain about in cardio?**
- Top complaints mined from reviews: Durability, Functionality-Overall, Instructions/User Manual/Troubleshooting. The return rate is 3.9%.
- **When does demand for cardio peak?**
- Demand peaks in Jan–Feb–Dec; the busiest month runs 2.3× the quietest.
- **What does it cost to enter the cardio niche?**
- Listings span $19.67–$468.46; the average listing price is $125.47 (sweet spot $15–$100). The average incumbent carries 14,801 reviews — the moat a new listing must climb.
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