---
title: "Peak Flow Meter — £167K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/business-industry-science/peak-flow-meter"
last_updated: "2026-07-31T12:09:59.395Z"
locale: en
meta:
description: "Niche score 50/100 · £167K/yr market · 54K searches/yr. A concentrated shelf (top 5 take 85% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · £167K/yr market · 54K searches/yr. A concentrated shelf (top 5 take 85% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Peak Flow Meter — £167K/yr Amazon UK Niche (2026) - Flapen"
---
# **peak flow meter**
**Worth a look**
Shows low returns (0.2%), but a concentrated shelf (top 5 take 85% of clicks) keeps it on the watch list.
Market size 35Growth 14Conversion 96Competition 12Returns 99Price range 85Avg price 93Brand share 33Review moat 86Quality gap 48
**Returns**
**Incredible****0.2%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****14.1%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****£22.00**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****279.56**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Great****£6.64–£75.40**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****£167K**
£167K/yr · 54K searches
**Brand share**
**Okay****85%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-21.9%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****85%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United Kingdom niche tracking, peak flow meter is a £167K/yr Amazon United Kingdom market (54K searches/yr). The top 5 brands hold 85% of demand. Demand peaks in Jan. Verdict: Worth a look — 50/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **peak flow meter market data**
- **Units sold / yr**
- **8K–10K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **£176K–£220K**
- units × avg price
- **Conversion rate**
- **14.1%**
- **Avg BSR**
- **#1,703**
- **Page quality**
- **0%**
- **Prime**
- **78%**
- **Sponsored**
- **33%**
- **Out of stock**
- **2.9%**
- **Avg brand age**
- **68 months**
- **Avg seller age**
- **200 days**
## **Competition & brand share**
The top 5 products capture 85% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▲rising
**Sellers**
**20**
**Top-5 brand share**
**85%**
Top 20: 100%
**Top-5 click share**
**85%**
Top 20: 100%
**Open market**
**9%**
- KNOXZY47% - Mini Wrights15% - YUANYUU9% - VED7% - Nascool7% - Generic5% - Open — no brand owns it (3 brands, 9%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -21.9% search growth over the last 90 days.
2K1KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/uk/business-industry-science/peak-flow-meter/trend)
## **Top peak flow meter search terms**
- **peak flow meter for adults uk**29K/yr-21.2%6.9% conv. - **peak flow meter**21K/yr-22.4%4.3% conv. - **peak flow**4K/yr-24.5%4.8% conv. [**All search terms **](https://flapen.com/research/uk/business-industry-science/peak-flow-meter/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%15%£25K30%£50K45%£75K60%£100K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**KNOXZY Peak Flow Meter for Adult to Monitor Lung Function - Expiratory Flow Meter to Monitor Respiratory Condition - Spirometry Lung Function Recovery Training Device - Standard Range for Adult**KNOXZY**£8.37**4.4★566 rev](https://www.amazon.co.uk/dp/B0CDH6SNBD) [2**Mini Wrights Standard Peak Flow Meter**Mini Wrights**£8.69**4.7★193 rev](https://www.amazon.co.uk/dp/B003A6AYXO) [3**Easy Peak Flow Meter for Adult to Monitor Lung Function Expiratory Flow Meter Color Coded Indicator Standard Range for Adult Lung Test Device Lung Capacity Tester (White)**YUANYUU**£10.57**4.3★43 rev](https://www.amazon.co.uk/dp/B0CPSVL4RR) [4**VED Peak Flow Meter for Adults Standard Range Expiratory Flow Meter for Lung Function Monitoring Portable Spirometry Breathing & Respiratory Training Device**VED**£8.32**4.2★22 rev](https://www.amazon.co.uk/dp/B0GC71LWB9) [5**Peak flow meter for adults uk with Bluetooth App Tracking Risk Indicator PEF & FEV1**Nascool**£75.40**4.4★147 rev](https://www.amazon.co.uk/dp/B0CT37BDXG)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**VED Peak Flow Meter for Adults Standard Range Expiratory Flow Meter for Lung Function Monitoring Portable Spirometry Breathing & Respiratory Training Device**VED**£8.32**22 rev7mo ago](https://www.amazon.co.uk/dp/B0GC71LWB9) [**Peak flow meter for adults uk with Bluetooth App Tracking Risk Indicator PEF & FEV1**Nascool**£75.40**147 rev2y ago](https://www.amazon.co.uk/dp/B0CT37BDXG) [**Easy Peak Flow Meter for Adult to Monitor Lung Function Expiratory Flow Meter Color Coded Indicator Standard Range for Adult Lung Test Device Lung Capacity Tester (White)**YUANYUU**£10.57**43 rev2y ago](https://www.amazon.co.uk/dp/B0CPSVL4RR) [**KNOXZY Peak Flow Meter for Adult to Monitor Lung Function - Expiratory Flow Meter to Monitor Respiratory Condition - Spirometry Lung Function Recovery Training Device - Standard Range for Adult**KNOXZY**£8.37**566 rev2y ago](https://www.amazon.co.uk/dp/B0CDH6SNBD) [**Easy Peak Flow Meter for Adult to Monitor Lung Function | Expiratory Flow Meter | Color Coded Indicator | Standard Range for Adult | Include Instructions and Blank Charts Color Coded Indicators**Generic**£6.64**14 rev5y ago](https://www.amazon.co.uk/dp/B0FRSYVYL2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Peak flow meter for adults uk with Bluetooth App Tracking Risk Indicator PEF & FEV1**Nascool**£75.40**4.4★**▲ 206%**](https://www.amazon.co.uk/dp/B0CT37BDXG) [**VED Peak Flow Meter for Adults Standard Range Expiratory Flow Meter for Lung Function Monitoring Portable Spirometry Breathing & Respiratory Training Device**VED**£8.32**4.2★**▲ 183%**](https://www.amazon.co.uk/dp/B0GC71LWB9) [**Vitalograph 43602 Peak Flow Meter NHS (pack of 1)**Vitalograph**£10.50**4.6★**▲ 59%**](https://www.amazon.co.uk/dp/B019F6YREO) [**AirZone Personal Peak Flow Meter (EU Scale)**Air Zone**£9.27**4.5★**— 7%**](https://www.amazon.co.uk/dp/B005HS56NQ) [**Easy Peak Flow Meter for Adult to Monitor Lung Function | Expiratory Flow Meter | Color Coded Indicator | Standard Range for Adult | Include Instructions and Blank Charts Color Coded Indicators**Generic**£6.64**4.8★**— 7%**](https://www.amazon.co.uk/dp/B0FRSYVYL2)
**~~View all trending →~~**
## **What buyers say about peak flow meter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Ease Of Use**26%
*“easy to use”*
**Value For Money**12%
*“Affordable”*
**Efficiency**11%
*“Efficient”*
**Quality-Overall**6%
*“a good monitor”*
**Accuracy-Overall**5%
*“Accurate and thoughtfully designed for easy use”*
**Health Monitoring**5%
*“Good for self monitoring”*
**Connectivity-Overall**5%
*“It links to your iphone so all the data is stored immediately”*
**Weight Light**3%
*“great light weight feel”*
**Cough Relief**2%
*“this is a handy device to easily measure my progress improving my lung capacity”*
**Durability**2%
*“Its been dropped a few times and not broken”*
### **What buyers complain about **
**Measurement/Reading Accuracy**22%
*“which makes it harder to rely on for consistent monitoring”*
**Ease Of Use**20%
*“Difficult to use not sure if works properly”*
**Accuracy-Overall**10%
*“Before I received this product I was concerned as to how accurate it would be”*
**Value For Money**5%
*“Although it wasnt cheap I would recommend this device”*
**Strength**5%
*“Very flimsy, scale hard to read”*
**Breathability**3%
*“After a winter of relative inactivity I was noticing that my breathing was quite shallow”*
**Certifications**3%
*“Not for medical diagnosis”*
### **Top return reasons **
**Measurement/Reading Accuracy**40%
**Breathability**20%
**Compatibility-Overall**10%
**Ease Of Use**10%
**Connectivity-Overall**10%
**Quality-Overall**10%
## **Common questions**
- **Is peak flow meter profitable to sell on Amazon United Kingdom?**
- The niche generates £167K/yr across 9 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -21.9%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the peak flow meter niche?**
- 9 brands and 20 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 85% of demand.
- **What do buyers complain about in peak flow meter?**
- Top complaints mined from reviews: Measurement/Reading Accuracy, Ease Of Use, Accuracy-Overall. The return rate is 0.2%.
- **When does demand for peak flow meter peak?**
- Demand peaks in Jan; the busiest month runs 1.5× the quietest.
- **What does it cost to enter the peak flow meter niche?**
- Listings span £6.64–£75.40; the average listing price is £22.00 (sweet spot $15–$100). The average incumbent carries 280 reviews — the moat a new listing must climb.
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