Is acapella breathing device profitable to sell on Amazon United States?

The niche generates $163K/yr across 15 tracked products. 6 of 6 products launched in the last 360 days are still selling. 90-day search growth is -6.7%. Flapen's verdict: Skip it (48/100).

How competitive is the acapella breathing device niche?

8 brands and 18 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 87% of demand.

What do buyers complain about in acapella breathing device?

Top complaints mined from reviews: Functionality-Overall, Quality-Overall, Breathability. The return rate is 2.5%.

When does demand for acapella breathing device peak?

Demand is steady year-round — the busiest month runs 1.5× the quietest.

What does it cost to enter the acapella breathing device niche?

Listings span $17.07–$58.84; the average listing price is $37.14 (sweet spot $15–$100). The average incumbent carries 1,239 reviews — the moat a new listing must climb.

acapella breathing device

Skip it

Soft demand (-6.7% this quarter) — this niche doesn't clear our bar today.

Avg price

Incredible$37.14

avg listing price — sweet spot $15–$100

Price range

Incredible$17.07–$58.84

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Returns

Good2.5%

return rate — above 5% kills the launch gate

Conversion

Good5.3%

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

Review moat

Good1,239.13

avg incumbent reviews — the moat a new listing must climb

Market size

Okay$163K

$163K/yr · 84K searches

Competition

Okay65%

top-5 click share — leaders hold, buyers still browse

Brand share

Okay87%

top-5 brand share — brands hold most of the demand

Growth

Bad-6.7%

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

According to Flapen's Amazon United States niche tracking, acapella breathing device is a $163K/yr Amazon United States market (84K searches/yr). The top 5 brands hold 87% of demand. Verdict: Skip it — 48/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

acapella breathing device market data

Units sold / yr: 5K–6K; avg 250–500/product
Revenue / yr: $186K–$223K; units × avg price
Conversion rate: 5.3%
Avg BSR: #59
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 6.0%
Avg brand age: 41 months
Avg seller age: 145 days

Competition & brand share

The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 rising

Sellers

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

65%

Top 20: 100%

Open market

AiraVentus46%
Vopacare17%
NebuAksol10%
TyeinGo8%
Giyosk7%
Willnice6%
Open — no brand owns it (2 brands, 7%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -6.7% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top acapella breathing device search terms

acapella breathing device41K/yr -19.2%6.3% conv.
acapella flutter valve15K/yr +3.6%5.5% conv.
acapella device11K/yr +26.0%3.2% conv.
acapella9K/yr -4.0%2.7% conv.
acapella flutter valve mucus removal device4K/yr +38.3%8.9% conv.
acapella device for lungs3K/yr -52.5%5.4% conv.

All search terms

Top acapella breathing device 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Flutter Valve Device for Lungs Breathing Exercise Device Adjustable Resistance Breathing Trainer for Natural Mucus

AiraVentus$58.844.5★239 rev

Flutter Valve Device for Lungs Breathing Exercise Device Adjustable Resistance Breathing Trainer

AiraVentus$57.474.5★239 rev

Flutter Valve Breathing Exercise Device for Lungs Exerciser Non-Measuring - Breathing Trainer Mucus Removal Device

Vopacare$52.564.6★362 rev

Flutter Valve Device for Lungs Breathing Exercise Device Exerciser Non-Measuring - Breathing Trainer Adjustable Resistance Breathing Trainer for Natural Mucus

AiraVentus$54.814.5★239 rev

Breathing Device Flutter Valve Device Medical-Grade Material Adjustable Resistance Home Use Airway Device

NebuAksol$46.474.7★285 rev

Newest

by launch date

Giyosk Breathing Exercise Device for Lungs Mucus Removal Flutter Flutter Valve Mucus Removal Device with A Set of Accessories Breathing Trainer for Lung Cleanse(Blue)

Giyosk$25.691,687 rev

4mo ago

Breathing Exercise Device Non-Measuring Exerciser & Portable Lung Exerciser with Adjustable Resistance Flutter Valve Respiratory Muscle Trainer for Mucus Clearance & Better Breathing

Willnice$41.7318 rev

7mo ago

Flutter Valve Breathing Exercise Device for Lungs Exerciser Non-Measuring - Breathing Trainer Mucus Removal Device

Vopacare$52.56362 rev

7mo ago

Flutter Valve Device for Lungs Breathing Exercise Device Exerciser Non-Measuring - Breathing Trainer Adjustable Resistance Breathing Trainer for Natural Mucus

AiraVentus$54.81239 rev

9mo ago

Flutter Valve Device for Lungs Breathing Exercise Device Adjustable Resistance Breathing Trainer

AiraVentus$57.47239 rev

10mo ago

What buyers say about acapella breathing device

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

What buyers love

Breathability16%

“It does help breathing”

Cough Relief13%

“Helped clear up my cough”

Quality-Overall12%

“Great build quality”

Ease Of Use12%

“Easy to use”

Efficiency10%

“Very effective for him”

Advertised Vs Actual Product7%

“Performs exactly as advertised”

Ease Of Cleaning5%

“also is easy to take apart for cleaning”

Value For Money3%

“Best money spent”

Instructions/User Manual/Troubleshooting2%

“The instructions are easy peasy”

Sinus Relief2%

“Great for mucus clearance”

What buyers complain about

Functionality-Overall14%

“Ineffective”

Quality-Overall9%

“Quality Could Be Better”

Breathability7%

“have problems breathing”

Value For Money7%

“Not worth paying for”

Instructions/User Manual/Troubleshooting4%

“Complicated instructions”

Material Quality4%

“This thing feels incredibly cheap”

Durability3%

“Broke”

Cough Relief2%

“My husband uses the pipe to help clear phlegm from his throat that coughing alone can't clear it”

Flammable2%

“more flam comes up on off day”

Size-Overall2%

“Not a good fit for me”

Top return reasons

Functionality-Overall27%

Breathability22%

Advertised Vs Actual Product11%

Product Condition4%

Ease Of Use4%