








🫁 Breathe Better, Live Smarter — Your Personal Lung Health Ally
The Digital Peak Flow Meter by Nascool delivers clinical-grade accuracy with a pressure differential sensor, requiring no calibration. It automatically displays key lung function metrics (PEF and FEV1) and supports manual tracking via a dedicated asthma diary app. Compact and portable, it’s designed for adults and kids 6+, perfect for managing asthma, COPD, and overall respiratory health with professional-grade reliability.




| ASIN | B09S3KJZZ7 |
| Best Sellers Rank | #2,845 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Flowmeters |
| Customer Reviews | 4.3 4.3 out of 5 stars (582) |
| Date First Available | February 9, 2022 |
| Item model number | SMPF-2S |
| Manufacturer | Nascool |
| Product Dimensions | 2 x 1.7 x 4 inches; 4.23 ounces |
C**M
Great value
Seems to work well, great value.
J**S
Peak Flow Meter
The product is easy to use and instructions are easily understood.
N**E
Great for the Price
My doctor recommended I get a peak flow monitor due to my asthma issues. This monitor works great for the price. It beeps kind of loudly when you turn it on and it beeps when it automatically turns off. Unfortunately you can’t turn it off with the power button (it only turns the device on) but since it shuts off automatically after not using, there’s no issues with battery life. You can set up the device phone app to feed into your Apple health data which is great.
K**E
Works well and EZPZ
Daughter recently diagnosed with asthma. This is an accurate and easy to use. App is nice too.
P**R
Good price and reads well
works as expected. setup was a breeze but the app is pretty basic don't expect much out of it. Make sure what ever you buy is not just wifi but also automatically transfers the data. there are many others that have a low price but are manual and the descriptions are deceiving
D**.
Great
It's my first one, and it works like they said it would every time
C**N
Durable
Very nice and durable product. Very user-friendly to set up.
C**E
Accurate? though, very consistent readings which is helpful & important
I'm not sure how accurate this is when compared to my PFT test results from December 2024. However, this peak flow meter seems very consistent for me. Thus, I will continue using it. It will help me determine if things are staying the same, improving or worsening over time. I'm glad I bought this.
A**A
i have bought this device for my son he has asthma,It is showing always wrong results and i have tried so many times to connect to my phone but cannot find my phone.... i dont know i think its a waste of money and time i will try to return this device
Trustpilot
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