O2 Trainer
MaybeProducts sell for $30.21 on average, inside the sweet spot. But the top 5 products take 73% of clicks, so O2 Trainer is a Maybe.
- Flapen Score
- 55 / 100Top 24% of 14,768 Health & Household niches · +6 vs the category median of 4955
- Market size
- $852K/yr436K searches / yr
- 90-day growth
- -0.7%search demand this quarter
- Competition
- 73%top-5 click share · 11 brands · 16 sellers
Flapen Score
O2 Trainer against its category
The dotted line is the Health & Household average. Past it, O2 Trainer is stronger. Inside it, weaker.
Market
The O2 Trainer market on Amazon at a glance
Shoppers on Amazon United States searched for O2 Trainer 436K times last year and spent an estimated $852K. The top 5 brands take 80% of clicks. Demand peaks in Feb. Flapen scores it 55 out of 100, a Maybe.
01 · Demand
An estimated 6.5% of those searches ended in a purchase.
Shoppers searched for this 436K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 6.5% of those searches ended in a purchase. Searches in the last 90 days moved -0.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $852K a year.
- Searches, last 12 months
- 436K
- Growth, 90 days vs prior 90
- -0.7%
- Conversion, latest week
- 6.5%
- Market size, estimated
- $852Ka year
- Peak month
- February2.7× the quietest month
- Top search term
- lung trainer148K searches a year
02 · Price
A sale here is worth $30.21.
Listings sell for $30.21 on average, from $5.25 to $57.42. Amazon reports units sold in ranges. This niche sold 25K to 30K a year. The average listing sells 2,000 to 2,500 of them. At $30.21 that is $60K to $76K a year per listing.
- Average price
- $30.21inside the $15 to $100 sweet spot
- Price range
- $5.25–$57.42
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 25K–30K
- Units per listing a year
- 2,000–2,500
- Revenue per listing a year
- $60K–$76K
- Returns
- 1.7%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
69% 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 #218 within Health Monitors. It carries 2,250 reviews at 4.36 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 69%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #218in Health Monitors
- Average rating
- 4.36 starsAmazon United States average 4.42 stars
- Average reviews
- 2,250per listing
- Listings tracked
- 13
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 43 months on average, so the names here are settling in.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 43 months
Products
Top O2 Trainer 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
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

Bas Rutten O2Trainer: Breathing Muscle Training Device | Lung Power & Endurance Tool for Athletes Singers & High-Altitude Performance | Diaphragmatic Respiratory Trainer | 16 Resistance Caps | Blue
- Price
- $57.42
- Rating
- 4.5/5
- Reviews
- 2,002
- Age
- 13y 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

THE BREATHER Natural Breathing Exerciser Trainer For Drug-Free Respiratory Therapy Breathe Easier with Stronger Lungs Guided Mobile Training App Included
- Price
- $50.41
- Rating
- 4.4/5
- Reviews
- 9,132
- Age
- 12y ago

Breathing Exercise Device for Lungs Lung Exerciser Device 5000ml Volumetric Deep Breathing Trainer with Flow Rate Indicator for Respiratory Health & Recovery
- Price
- $24.35
- Rating
- 4.6/5
- Reviews
- 1,178
- Age
- 2y ago
Trending
estimated 90-day click momentum
TRAININGMASK 2.0 - Elevation Training Mask for High Altitude Endurance & Breathing Workouts - Ideal for Running & Cardio (Medium Blackout)
- Price
- $41.79
- Rating
- 4.3/5
- Reviews
- 1,158
- Age
- 10y 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

Portable Lung Capacity & Ab Trainer - Adjustable Resistance Breathing Exerciser for Core Strength Swimming Martial Arts | Medical-Grade Silicone Compact Design with Flow Control Valve (Black dots)
- Price
- $5.25
- Rating
- 4.4/5
- Reviews
- 14
- Age
- 1y ago

Portable Breathing Trainer with Adjustable Resistance Settings for Enhanced Strength and Endurance Black
- Price
- $6.19
- Rating
- 4.3/5
- Reviews
- 430
- Age
- 1y ago
![Sparthos Workout Mask High Altitude Mask - Face Mask for Gym Training Work Out Running Cycling Elevation Cardio Fitness - Resistance o2 2 3 - Lung Breathing Exercise Mask Men Women [Black +Case]](https://m.media-amazon.com/images/I/41xrgJRetmL.jpg)
Sparthos Workout Mask High Altitude Mask - Face Mask for Gym Training Work Out Running Cycling Elevation Cardio Fitness - Resistance o2 2 3 - Lung Breathing Exercise Mask Men Women [Black +Case]
- Price
- $41.18
- Rating
- 4.4/5
- Reviews
- 7,936
- Age
- 8y ago
Newest
by launch date
Portable Lung Capacity & Ab Trainer - Adjustable Resistance Breathing Exerciser for Core Strength Swimming Martial Arts | Medical-Grade Silicone Compact Design with Flow Control Valve (Black dots)
- Price
- $5.25
- Rating
- 4.4/5
- Reviews
- 14
- Age
- 1y ago

OxyBio Oxy Respiratory Trainer | Breathe Easier with Stronger Lungs | Made with High Grade Silicone | Breathing Exercise Device for Lungs | Portable | Adjustable Resistance Settings | Black
- Price
- $24.76
- Rating
- 4.0/5
- Reviews
- 370
- Age
- 1y ago

Portable Breathing Trainer with Adjustable Resistance Settings for Enhanced Strength and Endurance Black
- Price
- $6.19
- Rating
- 4.3/5
- Reviews
- 430
- Age
- 1y ago

3 PCS Portable Breathing Trainer with Adjustable Resistance Settings (Black/Grey/White)
- Price
- $10.13
- Rating
- 4.3/5
- Reviews
- 430
- Age
- 2y 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
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 73% of clicks. A locked shelf that new listings rarely crack.
Brands
11 rising
Sellers
16
Est. top-5 brand share
80%
Top 20: 100%
Est. top-5 click share
73%
Top 20: 100%
Open market
15%
- Inhale39%
- O2Trainer16%
- Expand-A-Lung9%
- TEAWOO9%
- The Breather7%
- TyeinGo5%
- Open — no brand owns it (5 brands, 15%)
Demand
O2 Trainer search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Feb · busiest ÷ quietest = 2.7×
Search terms
Top O2 Trainer search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- lung trainer148K/yr
- breathing trainer113K/yr
- breath trainer31K/yr
- vo2 max trainer15K/yr
- inspiratory muscle trainer11K/yr
- respiratory trainer16K/yr
- o2 trainer22K/yr
- bas rutten o2 trainer19K/yr
- ironlung5K/yr
- oxyfit8K/yr
Reviews and returns
What reviews say buyers love and hate about O2 Trainer
We read the reviews and the return reasons for every product selling here.
“bad instructions”
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.
18 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 O2 Trainer 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









