Frequently asked questions

Air Next 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 Air Next Spirometer that connects to your smartphone via Bluetooth, one replaceable disposable single use turbine, one cotton bag, two AAA batteries 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 Next Spirometer.

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

Kitkat, Lollipop, Marshmallow, Nougat and Oreo versions.

iOS: iPhone 4S or above; iOS 9 or higher.
Android: Android OS 5.0 and above.

Air Next spirometer has an expected life span of 10 years. Replace the batteries when they are running low on power.

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 tests are performed and how reproducible they are. An acceptable test is a test performed without errors.


  • At least 3 acceptable maneuvers.
  • For adults, FVC and FEV1 are within 150 mL.
  • For children aged 2-6, FVC and FEV1 are within 100 mL or 10% of the highest result (whichever is greater).


  • At least 2 acceptable maneuvers.
  • For adults, FVC and FEV1 are within 150 mL.
  • For children aged 2-6, FVC and FEV1 are within 100 mL or 10% of the highest result (whichever is greater).


  • At least 2 acceptable maneuvers.
  • For adults, FVC and FEV1 are within 200 mL.
  • For children aged 2-6, FVC and FEV1 are within 150 mL or 10% of the highest result (whichever is greater).


  • At least 2 acceptable maneuvers.
  • For adults, FVC and FEV1 are within 250 mL.
  • For children aged 2-6, FVC and FEV1 are within 200 mL or 10% of the highest result (whichever is greater).


  • One acceptable maneuver.


  • No acceptable maneuver.

Reference: Recommendations for a Standardized Pulmonary Function Report. An Official American Thoracic Society Technical Statement.

Send an email to and include that you want to delete your account and your personal data.

Send an email to and include that you want a copy of your data.

NuvoAir technology identifies some of the most common errors performed during a spirometric maneuver. An error is triggered when:

  • Back-Extrapolated Volume (BX)
    Type: Slow Start
    Trigger: Back-extrapolated volume > 5% of FVC or 150 mL, whichever is greater

  • Time to Peak (TP)
    Type: Slow Start
    Trigger: Time to peak > 85 ms

  • Cough (CO)
    Type: Varying Effort
    Trigger: Cough is detected in first 2 seconds

  • Early Termination (ET)
    Type: Early Termination
    Trigger: Flow in last sample of Flow array > 0.2 L/s

  • Cessation (CE), also known as Glottis Closure or Breath Holding
    Type: Early Termination
    Trigger: Volume change in last second > 0.025 L

* NuvoAir does not implement the 6s rule for test length since test duration varies between patients. Instead we stop test recording when the turbine stops spinning for over 1 second. Turbine rotation is finally converted to human flow via a fluid dynamics algorithm.

Reference: Standardisation of spirometry

Lung age is a good tool to help patients understand the extent to which their lungs have been affected by external factors such as smoking.

Lung age is computed in accordance to the 1985 paper by J. F. Morris and W.Temple.

Reference Spirometric "lung age" estimation for motivating smoking cessation.

Predicted values (including z-score and LLN) are calculated according to reference papers below.

Obstruction and restriction are determined according to the standard ATS/ERS decision tree (figure 2 in the reference below).

When obstruction is observed, its severity is computed according to ATS/ERS standards (table 6 in the reference below).

When restriction is observed, its severity is computed as:


Reference: Interpretative strategies for lung function tests


Install the Air Next Spirometer application from Apple Store or Google Play Store for free and open the application. Create an account and then a profil. Insert the disposable turbine and follow the instructions in the application on 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 Air Next spirometer on multiple patients. After you have created an account and signed in, you can create a 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”, then tap on "Device". Here you can see the status of your Air Next spirometer, or switch to another spirometer.

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

Go to “Settings” and tap on "Device". A percentage indicator will show the battery level. If the device does not connect, try to replace your batteries.

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 Next 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 Next Spirometer needs to be correctly connected to the smartphone via Bluetooth. Make sure the app has permission to access Bluetooth, and that Bluetooth is turned on. If you are using an Android phone, then Location Permission is required for the app to be able so scan for the Air Next.