This website is for healthcare professionals - NIOX PRO® is available in the following countries.

nioxOS®

The world's first dedicated operating system for FeNO testing.

Smarter FeNO testing, powered by nioxOS®

nioxOS® is the intelligent operating system at the heart of NIOX® devices, ensuring every FeNO test is fast, accurate, and effortless.1-3 Designed exclusively for nitric oxide measurement, nioxOS® brings together advanced algorithms, real-time processing, and seamless connectivity to support clinicians in delivering optimal asthma care.

Visual and audio aids

At NIOX® we believe in accessibility, that's why nioxOS® has NIOX Accessible Aids® with both visual and audio cues. Our four animations make FeNO fun. Discover our animations.

Making testing easy

nioxOS® is designed to be easy to understand and use. We do not feature any text within our operating system, our intuitive design can be used by anyone, anywhere!

Keep testing without delays

The nioxOS® home screen contains real-time device information that enables you to check the status of the NIOX® Sensor, Breathing Handle and Device, to make ordering simple.

World-class support

As a company dedicated to FeNO testing, we offer world-class support with the patent pending, nioxOS® FeNO Action System. Simply scan the QR code to learn more about a device action.

Real-time nNO Measurement

With nioxOS® you can see nNO measurements in real time via the smart nNO graph interface, making nNO testing with NIOX® align with ERS standards.4

Guided assistance

When it is time to change a NIOX® device, Sensor or Breathing Handle, nioxOS® guides you through the process, showing you how to change without any servicing required.

 Designed to be accessible by all

From the differentiating colour hue suitable for colour blindness, to adjustable audio aids for animations, we've designed nioxOS® to be accessible by all types of patients and healthcare professionals.

Let's get animated

Discover our world class NIOX Accessible Aids®

The FeNO Dial

  Designed for adults     10 seconds or 6 seconds

Designed for adult patients, the FeNO dial is simple. Instruct patients to inhale until the middle circle fills up with white, then exhale for 10 seconds keeping the needle in the green area.

The FeNO Cloud

  Designed for all     10 seconds or 6 seconds

Designed for both adult and child patients, the FeNO Cloud builds on 20 years of heritage of the Cloud animation. This is NIOX®'s first vertical animation. On inhalation the sun moves up and the angry cloud disappears. On exhalation, patients have to keep the Cloud between the two lines vertically.

The FeNO Puppy

  Designed for children     10 seconds or 6 seconds

Designed for children, the FeNO Puppy is a fun animation where the child patient needs to blow the Puppy's hot air ballon from one side to another. Inhaling moves the sun into the air and exhaling blows the Puppy across the screen. The aim of the game is to keep the Puppy between the lines to safety.

The FeNO Rocket

  Designed for children     10 seconds or 6 seconds

Designed for children, the FeNO Rocket is our most unique animation. This animation adds a incentive for children to maintain the flow rate by collecting the gold stars in the middle of the screen. On inhalation the satellite moves up into the sky. On exhalation, get the Rocket to the moon by keeping it between the two white lines. Collect the stars along the way!

Making FeNO Fun

Complimentary animation stickers

We're proud of our child-focused animations that make FeNO Fun, but we want the experience to go further. We offer our customers complimentary animation stickers to help transform the already fun FeNO test animations into a moment that paediatric patients can smile about.

Intelligent and intuitive software, with so much more...

Connectivity to NIOX Cloud®, Windows, iOS, iPadOS, MacOS, and Android.

Training demo mode to help patients do FeNO right.

Monitors humidity, atmospheric pressure and temperature in real time.

Privacy focus with no device SIM card or always-on server connection.

Encrypted data and connectivity protocol to keep your device secure.

Patient tracking with alpha-numeric optional Patient ID.

Full in-depth logs to understand actions, measurements and more.

Free software firmware updates to keep nioxOS® fresh with new features.

The next generation of NIOX® is here, and it's available now!

Request a quote for a device today with our simple and easy to use quotation tool. Used by thousands of healthcare professionals, NIOX® is the global technology of choice for FeNO testing.5,6

Request a Quote

NIOX® Customer Support and Training

At NIOX® we are passionate about providing excellent support and training.

References:

1. Alving K et al. Validation of a new portable exhaled nitric oxide analyzer, NIOX VERO®: randomized studies in asthma. Pulm Ther. 2017;3:207-18.
2. Carroll WD. NIOX VERO: Individualized Asthma Management in Clinical Practice. Pulmonary Therapy. 2016;2:171-88.
3. Ali H et al. The Potential of Fractional Exhaled Nitric Oxide as a Biomarker in Predicting and Optimizing Use of Treatment in Asthma. South East European Journal of Immunology. 2023;6(1):18-23.
4. Marangu-Boore et al. Nasal nitric oxide measurement for the diagnosis of primary ciliary dyskinesia: summary of the European Respiratory Society technical standard. Breathe 2025 21(2): 240230
5. NIOX®. Data on file. MKT-DOF-013. 2024.
6. NIOX®. Data on file. MKT-DOF-007. 2026.

© Copyright NIOX Group plc. MKT-PRM-WW-0543. May 2026.