Iron Lung
FailThe top 5 products take 95% of clicks, so Iron Lung is a Fail.
- Flapen Score
- 42 / 100Ranks 11,318 of 14,768 Health & Household niches · −7 vs the category median of 4942
- Market size
- $38K/yr23K searches / yr
- 90-day growth
- +53.6%search demand this quarter
- Competition
- 95%top-5 click share · 7 brands · 10 sellers
Flapen Score
Iron Lung against its category
The dotted line is the Health & Household average. Past it, Iron Lung is stronger. Inside it, weaker.
Market
The Iron Lung market on Amazon at a glance
Shoppers on Amazon United States searched for Iron Lung 23K times last year and spent an estimated $38K. The top 5 brands take 95% of clicks. Demand peaks in Feb–Mar–Apr–May. Flapen scores it 42 out of 100, a Fail.
01 · Demand
An estimated 2.1% of those searches ended in a purchase.
Shoppers searched for this 23K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 2.1% of those searches ended in a purchase. Searches in the last 90 days moved +53.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated $38K a year.
- Searches, last 12 months
- 23K
- Growth, 90 days vs prior 90
- +53.6%
- Conversion, latest week
- 2.1%
- Market size, estimated
- $38Ka year
- Peak month
- February15.4× the quietest month
- Top search term
- airofit15K searches a year
02 · Price
A sale here is worth $78.51.
Listings sell for $78.51 on average, from $13.37 to $347.51. Amazon reports units sold in ranges. This niche sold 500 to 750 a year. The average listing sells 0 to 100 of them. At $78.51 that is $0 to $8K a year per listing.
- Average price
- $78.51inside the $15 to $100 sweet spot
- Price range
- $13.37–$347.51
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 500–750
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$8K
- Returns
- 1.3%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
100% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #133 within Health Monitors. It carries 2,339 reviews at 3.87 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #133in Health Monitors
- Average rating
- 3.87 starsAmazon United States average 4.42 stars
- Average reviews
- 2,339per listing
- Listings tracked
- 7
04 · Newcomers
1 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 47 months on average, so the names here are settling in.
- Launched, last 12 months
- 1
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 47 months
Products
Top Iron Lung products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 14, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Airofit Elite Breathing Trainer for Sports Fitness and Performance Improvement Advanced Breathing Training with Guided Workouts Performance Tracking and Progress Analytics for Daily Use
- Price
- $347.51
- Rating
- 1.0/5
- Reviews
- 3
- Age
- 4mo ago

Bodyssey Breathing Trainer | Premium Silicone Trainer | Boost Breathing Patterns | Adjustable Resistance Levels | Compact Portable and Easy to Maintain (Black)
- Price
- $38.20
- Rating
- 4.4/5
- Reviews
- 52
- Age
- 2y ago

GoFitness Push Down Bar Chest Exerciser at Home Workout Equipment
- Price
- $64.26
- Rating
- 4.3/5
- Reviews
- 2,464
- Age
- 7y ago

Inhale Lung Trainer | Breathing Exercise Device for Lungs | Made in USA | Lung Exerciser Device | Breathing Trainer | Adjustable Resistance | Medical Grade Silicone Mouthpiece | Carrying Case included
- Price
- $19.65
- Rating
- 4.3/5
- Reviews
- 2,029
- Age
- 5y ago

EXPAND-A-LUNG | Breathing Exerciser Device for Lungs | Airflow Trainer Fitness | Cardio Expansion & Capacity | Sports Endurance | Dual-Way Inhale-Exhale Workout
- Price
- $16.17
- Rating
- 4.3/5
- Reviews
- 2,522
- Age
- 12y ago
Trending
estimated 90-day click momentum
EXPAND-A-LUNG | Breathing Exerciser Device for Lungs | Airflow Trainer Fitness | Cardio Expansion & Capacity | Sports Endurance | Dual-Way Inhale-Exhale Workout
- Price
- $16.17
- Rating
- 4.3/5
- Reviews
- 2,522
- Age
- 12y ago

GoFitness Push Down Bar Chest Exerciser at Home Workout Equipment
- Price
- $64.26
- Rating
- 4.3/5
- Reviews
- 2,464
- Age
- 7y ago

Airofit Elite Breathing Trainer for Sports Fitness and Performance Improvement Advanced Breathing Training with Guided Workouts Performance Tracking and Progress Analytics for Daily Use
- Price
- $347.51
- Rating
- 1.0/5
- Reviews
- 3
- Age
- 4mo ago

Bodyssey Breathing Trainer | Premium Silicone Trainer | Boost Breathing Patterns | Adjustable Resistance Levels | Compact Portable and Easy to Maintain (Black)
- Price
- $38.20
- Rating
- 4.4/5
- Reviews
- 52
- Age
- 2y ago

Lung Trainer - Dual-Resistance Breathing Exerciser - High-Quality Silicone - Workout Program Included - Portable
- Price
- $13.37
- Rating
- 4.4/5
- Reviews
- 169
- Age
- 1y ago
Newest
by launch date
Airofit Elite Breathing Trainer for Sports Fitness and Performance Improvement Advanced Breathing Training with Guided Workouts Performance Tracking and Progress Analytics for Daily Use
- Price
- $347.51
- Rating
- 1.0/5
- Reviews
- 3
- Age
- 4mo ago

Lung Trainer - Dual-Resistance Breathing Exerciser - High-Quality Silicone - Workout Program Included - Portable
- Price
- $13.37
- Rating
- 4.4/5
- Reviews
- 169
- Age
- 1y ago

Bodyssey Breathing Trainer | Premium Silicone Trainer | Boost Breathing Patterns | Adjustable Resistance Levels | Compact Portable and Easy to Maintain (Black)
- Price
- $38.20
- Rating
- 4.4/5
- Reviews
- 52
- Age
- 2y ago

Inhale Lung Trainer | Breathing Exercise Device for Lungs | Made in USA | Lung Exerciser Device | Breathing Trainer | Adjustable Resistance | Medical Grade Silicone Mouthpiece | Carrying Case included
- Price
- $19.65
- Rating
- 4.3/5
- Reviews
- 2,029
- Age
- 5y ago

GoFitness Push Down Bar Chest Exerciser at Home Workout Equipment
- Price
- $64.26
- Rating
- 4.3/5
- Reviews
- 2,464
- Age
- 7y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 95% of clicks. A locked shelf that new listings rarely crack.
Brands
7 falling
Sellers
10
Est. top-5 brand share
95%
Top 20: 100%
Est. top-5 click share
95%
Top 20: 100%
Open market
2%
- Airofit40%
- Bodyssey24%
- GOFITNESS17%
- Inhale10%
- Expand-A-Lung5%
- SELENCIO2%
- Open — no brand owns it (1 brand, 2%)
Demand
Iron Lung search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Feb, Mar, Apr, May · busiest ÷ quietest = 15.4×
Search terms
Top Iron Lung search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- airofit15K/yr
- airofit breathing trainer5K/yr
- airofit pro 2.03K/yr
Reviews and returns
What reviews say buyers love and hate about Iron Lung
We read the reviews and the return reasons for every product selling here.
“Instructions are confusing & written poorly”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
21 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Iron Lung questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









