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peak flow meter

Skip it

Soft demand (-17.6% this quarter) — this niche doesn't clear our bar today.

Market size 29Growth 16Conversion 60Competition 17Returns 86Price range 66Avg price 95Brand share 31Review moat 86Quality gap 80

Avg price

Incredible€31.20

avg listing price — sweet spot $15–$100

Review moat

Great282.83

avg incumbent reviews — the moat a new listing must climb

Returns

Great1.5%

return rate — above 5% kills the launch gate

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Price range

Good€8.59–€137.51

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

Conversion

Good5.2%

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

Brand share

Okay86%

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

Market size

Okay€128K

€128K/yr · 79K searches

Competition

Bad79%

top-5 click share — a locked-up shelf

Growth

Bad-17.6%

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

According to Flapen's Amazon Germany niche tracking, peak flow meter is a €128K/yr Amazon Germany market (79K searches/yr). The top 5 brands hold 86% of demand. Verdict: Skip it — 47/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

peak flow meter market data

Units sold / yr
3K–4K
avg 100–250/product
Revenue / yr
€94K–€125K
units × avg price
Conversion rate
5.2%
Avg BSR
#1,038
Page quality
0%
Prime
83%
Sponsored
50%
Out of stock
6.6%
Avg brand age
57 months
Avg seller age
199 days

Competition & brand share

The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.

Brands

10 falling

Sellers

27

Top-5 brand share

86%

Top 20: 100%

Top-5 click share

79%

Top 20: 100%

Open market

10%

  • KNOXZY35%
  • Nascool31%
  • Vitalograph11%
  • THERACASO5%
  • YUANYUU5%
  • Ved4%
  • Open — no brand owns it (4 brands, 10%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -17.6% search growth over the last 90 days.
2K1KBlack Friday '24Spike '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Top peak flow meter search terms

  • peak flow meter28K/yr
  • spirometer12K/yr
  • lungenfunktionstest gerät6K/yr
  • peak flow meter asthma7K/yr
  • lungenvolumen messgerät5K/yr
  • pef4K/yr
  • spirometer für zuhause4K/yr
  • peak flow4K/yr
  • lungenfunktionstest für zuhause3K/yr
  • peak-flow-meter6K/yr
All search terms

Top peak flow meter 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%€13K20%€26K30%€38K40%€51K101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 12 tracked products in this niche — three views at once, no toggling.

What buyers say about peak flow meter

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

What buyers love

Atmungsaktivität20%

“ja super für übungen der atemwege”

beworben Vs Tatsächliches Produkt16%

“macht seinen job”

Qualität insgesamt14%

“Super Qualität”

Preis-Leistungs-Verhältnis10%

“Preis stimmt auch”

Effizienz9%

“Hilft ganz gut”

Benutzerfreundlichkeit9%

“einfach und gut”

Hustenlinderung5%

“Bei chronischen Lungenerkrankungen ist es hilfreich regelmäßig das Lungenvolumen zu prüfen”

Speicherkapazität2%

“Erfüllt den Zweck, schön wäre noch ein kleiner Stoffbeutel zum verstauen”

Gesamtgröße2%

“passt”

Gesundheitsüberwachung2%

“Überwachung Lungenfunktion”

What buyers complain about

Funktionalität insgesamt18%

“Null Wirkung”

Qualität insgesamt10%

“Sehr billiges Produkt”

Konnektivität – insgesamt8%

“Keine Bluetoothverbindung”

Preis-Leistungs-Verhältnis8%

“Müll für 10 Euro”

Anleitung/Benutzerhandbuch/Fehlerbehebung7%

“Leider nur Anleitung in Englisch”

Hustenlinderung6%

“Ich habe starkes Asthma”

beworben Vs Tatsächliches Produkt6%

“Nirgendwo in der Produktbeschreibung sind die Sicherheitshinweise einsehbar”

Stärke3%

“aber eine stärkere Wirkung erwartet.”

Benutzerfreundlichkeit3%

“So einfach soll das ja nicht sein, kenne auch andere bei dem sehr schwer ist die Kugeln hoch zu bekommen die sind aber so so so leicht das sogar kleine Kinder hinkriegen. finde es nicht gut!”

Messung / Ablesegenauigkeit3%

“Genauigkeit ist fraglich”

Top return reasons

Funktionalität insgesamt26%
beworben Vs Tatsächliches Produkt8%
Sprachprobleme7%
Messung / Ablesegenauigkeit6%
Konnektivität – insgesamt6%
Defekt Material/Teile5%
Genauigkeit insgesamt4%
Benutzerfreundlichkeit3%
Atmungsaktivität3%
Zertifizierungen3%

Common questions

Is peak flow meter profitable to sell on Amazon Germany?
The niche generates €128K/yr across 12 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -17.6%. Flapen's verdict: Skip it (47/100).
How competitive is the peak flow meter niche?
10 brands and 27 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 86% of demand.
What do buyers complain about in peak flow meter?
Top complaints mined from reviews: Funktionalität insgesamt, Qualität insgesamt, Konnektivität – insgesamt. The return rate is 1.5%.
When does demand for peak flow meter peak?
Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the peak flow meter niche?
Listings span €8.59–€137.51; the average listing price is €31.20 (sweet spot $15–$100). The average incumbent carries 283 reviews — the moat a new listing must climb.