CMI HealthSpiroLink | Smart Peak Flow Meter | Portable Pulmonary Function Test, Pocket Spirometer | Long Lifespan, Durable | for Asthma, COPD, Musicians, Smokers, Athletes, and More

To be honest, when I decided to buy this spirometer, I was a little bit hesitate because of some customers' reviews of two years ago.However, as an experienced product manager, I love products with beautiful design :-) and this spirometer tops all others in terms of design. So I placed the order.When I received it and tried it for a few weeks, it was just amazing. The design looks exactly as shown on pictures. And more importantly the test results are within only 2-3% errors with the ones by my doctor. In addition, it is super easy to set up and easy to use. As a product manager, I am obsessed with Usability. This one is just great.

App being cloud based is not a feature, but a burden. I think I'm burdening their servers when I try to click on anything in the app. (using wifi, have a decent internet connection--so no trouble on my end)Just tried closing and reopening the app, I've now got a white screen and it's doing nothing.When the app does load, it's usually sitting there with the spinning icon. Then it won't stay connected to device. 50% of the time it says device not detected. Then when it tells me to start the test, 50% of the time it gives a sad face (literally) and says "send data failed".I think I'd keep it if it were 10 bucks, but at $80, it's going back.Going to look for a manual incentive spirometer.The device itself feels very fragile.

I recently purchased the CMI Health SpiroLink for my daughter, who has seasonal asthma, and it has truly been a game changer for us. She has no problem using the device and the shape of the mouthpiece seems more kid-friendly than other brands. This portable peak flow meter gives me peace of mind, knowing I can easily monitor her lung function.The device is easy to sync with the app on my phone. The app also tells me real-time weather and air quality info which is so helpful. Overall great product and worth every penny.

CMI worked diligently to get the app corrected and they succeeded! Customer Service was great and so they get 5 stars!

I am a lung transplant patient who began monitoring my FEV1 using another device recommendedby the transplant team. It cost $300, which insurance would not cover, had kludgy decades old technology that was error prone, and had a lousy user interface. I often had to do many repetitions to get a single measurement (and you are supposed to get an average of 3 for a valid one). After about 2 months it stopped working and I bought a Spriolink. It's not perfect, but it does what I need.I understand the unit is designed for asthma patients and it emphasizes other measures than FEV1, but the FEV1 it reports seems to be accurate. I have not had formal pulmonary function testing since I began using it so I can't be certain about this, but my pulmonologist believes the numbers. There is a problem with FVC in that it is always equal to, or just 0.1 or 0.2 different, from FEV1. This makes no sense to me or my pulmonologist and was not the case with my previous device (before it quit working). And it's not just my unit. Based on my experience, my pulmonologist recommended the Spirolink to another patient and his unit does the same thing.As far as the much maligned app goes, I quit using it. I did get it working on my iPhone and it ran OK but I don't see why you need it if you are capable of averaging three numbers. More to the point, the company (in this case a Chinese one) is collecting your data and storing it on their servers. Is that something you want any medical supply company to be doing with your health information? I'd rather just keep my own records.

Would like to see it compatible with Mac, and come with a charger, or usb C to usb C to charge. Comes with micro usb to usb A.Nice little device. does what it says.No way to compare its accuracy.Comes with 2 mouthpieces. Nice.

My asthma took a turn for the worse and I needed to start monitoring my pulmonary function. I tried the less expensive types such as a simple mechanical one. I realize this is more money but it works much like the one they use at my doctors office. It syncs up with my android phone (it also supports apple) flawlessly. You can generate reports for the day, week and multiple weeks. It tracks am and pm readings so you can see how you are doing through the day.I see my pulmonologist twice a year and when I do a pft it may not capture "bad" days. So this I will use this to keep track of trends by transposing my results into an excel spreadsheet. I will be showing the results to my pulmonologist. I really do like this tool

I had high hopes but these were dashed when I got it and found it would not turn on even after charging. I noticed that the power button was installed sideways and not in place. After some work I managed to get the power button in place and it turned on, but I have had constant problems with sync and the app shutting down. I just assumed that the bad reviews were from people who weren't tech savvy but I really believe this product is not worth the money and definitely not ready for primetime. Just in case you ask I did look for tech support and followed their recommendations but after trying it multiple times with two different phones I just gave up. Even when it recorded something it didn't give you any % info so you might as well use the cheap plastic one the Dr will give you and save $100.