Frequently asked questions

Air Smart Spirometer received CE-certification as a Class IIa Medical Device developed according to the latest quality standards. It has been validated against the MiniSpir and Jaeger spirometers, considered to be gold standard.

It contains the device that connects to the smartphone via the audio jack, one replaceable disposable single use mouthpiece and the user manual.

The app is available to download for free via the Apple Store and Google play store in the local language. You can just search for Air Smart Spirometer.

Arabic, English, French, German, Italian, Spanish, Swedish, Portuguese..

Kitkat, Lollipop, Marshmallow, Nougat and Oreo versions.

iOS: iPhone 4S up to iPhone 8 with 3.5mm headphone jack adapter. (iOS 9 or higher)
Android: The smartphone needs to have a minimum amount of CPU power ("antutu score) to be able to operate the application as intended. Air Smart Application for Android requires the phone to have a minimum Antutu Score of 40.000. Please check if your Android phone is compatible by clicking here.

Air Smart Spirometer lasts for 1000 full tests or about 2 years. That is about 10 tests per week for 2 years!

You can sit upright with no restrictions around your chest. You can also stand, but the important thing is that you are straight with your chest. Before performing the forced expiration, breathe normally for a few seconds, then take a deep breath with the mouthpiece and wrap your lips around the mouthpiece, followed by a further quick, full inspiration expiration.

It is important that you blow as fast as you can and until no more air comes out.

After going through the troubleshoot section, should the device not work properly please send an email to explaining what the issue is.

The grading is based on how well the tests are performed and how reproducible they are.

Very Good

  • At least 3 acceptable tests (without detectable errors).
  • The difference in FVC between the two best tests is no more than 150 ml.
  • The difference in FEV1 between the two best tests is no more than 150 ml.
  • (Also known as A and B).


  • At least 2 acceptable tests.
  • The difference in FVC between the two best tests is no more than 200 ml.
  • The difference in FEV1 between the two best tests is no more than 200 ml.
  • (Also known as C)


  • Only one acceptable test.
  • (Also known as D)

Not acceptable

  • No acceptable tests.
  • (Also known as F)

The app shows if your lung tests indicates:

  • Normal lung health
  • Mild obstruction
  • Severe obstruction
  • Moderate obstruction
  • Restrictive airways

Obstruction indicates that the airways are partially blocked, so the air will come out slower. You can simulate this by blowing out through a straw.

Restriction means that the total lung volume is too low. Although an accurate diagnoses of total lung volume is not possible with spirometry (residual lung volume cannot be measured with a spirometer) spirometry results can be very suggestive for a restrictive lung disease.


Install the Air Smart Spirometer application from Apple Store or Google Play Store for free and open the application. Create an account and then a profil. Next step is to insert the spirometer into the smartphone’s headphone jack. When this is done, please insert the disposable turbine and follow the instructions in the application how to start a test.

You need to create an account to be able to save your test results. Enter your full name. email address and a password with at least 8 characters to get started.

The app supports multiple profiles which allows you to use the smart spirometer on multiple patients. After you have created an account and signed in, you can create an profile by tapping the blue button in the right bottom corner.

Tap the profile in the profile list and then tap PROFILE. Tap on the information you want to change. You can also delete the profile by tapping the More menu in the top right corner on the profile page.

The app requires internet to be able to automatically save profile changes, account changes and to save test results.

You can reset your password by tapping the FORGOT link on the sign in screen in the app. You will receive an email to the email address that you have entered and from there be able to reset your password.

Tap on the More menu in the app (top right corner) and tap “Settings”. If the Smart Air Spirometer is connection is correctly the status will show OK. If the status shows ERROR, then increase the volume on the smartphone to maximum.

It’s important to allow the device access to the smartphone’s microphone. The Air Smart app will ask you the first time for permission to access the smartphone’s microphone, which you need to accept if you want to use Air Smart Spirometer. If you accidentally deny the Air device access, you can change this in the settings menu of your smartphone and click on the Air Smart App icon and allow access.

You need to set the volume of your smartphone to maximum. If the volume is not at its max, the spirometer will not operate, and the application will display a pop-up reminding you to set the volume at the maximum level. You can also check if the volume is correctly set by tapping “Status” in the settings menu in the Air Smart App. If the volume is not at its max, the “Status” will display “Error” in red letters, if the volume is at max, the “Status” will display “OK”.

You can change the settings at any time by tapping “Settings” in the menu in the in the Air Smart application.

Go to “Settings” and tap on “Status”. If the application says “Not connected”, it means that the battery has run out.

If you quickly need access to the user manual, legal or regulatory information as well as get in touch with NuvoAir for any query, you can access all of these features from the Air Smart App’s Help section by tapping the “Help” option in the main menu.

Before starting a test, you need to select a profile. Then tap the plus button in the bottom of the screen. You will receive instructions for how to conduct a spirometry test. When you have carefully read through the instructions, tap “Start Test”.

The application will provide feedback during a spirometry to help you to perform the test as optimal as possible.

After each trial you can see the result directly on the screen. The result screen will display the flow-volume curve, FEV1, FVC, the ratio between FEV1/FVC and PEF as well for how long you have exhaled. You can add up to 5 test at one session. The app will automatically display the best curve and results for you. Please note that spirometry guidelines recommend at least 3 tests per session.

You are always in control of your data and the data belongs to you. However, if you feel like sharing the data with your physician or loved ones you can easily do that by tapping on the share button at the top right corner of the result screen. The app automatically generates a pdf report of your results that can be shared.

The Air Smart Spirometer needs to be correctly connected to the smartphone via the headphone jacket. Sometimes there is dust inside the jacket, causing the audio connector from the Air Smart Spirometer not to be connected. Sometimes the headphone jacket is damaged. In order to check this, please plug in official headphones from the smartphone manufacturer and listen to music. If the sound quality is lower or distorted, your headphone jacket might be damaged, causing the Air Smart Spirometer not to connect with your smartphone.