# NNOXX — Work out more effectively. > Real-time muscle oxygenation and nitric oxide monitoring for optimized workouts. (iPhone/iPad app by NNOXX Inc.) - Source: https://appshunter.io/ios/app/nnoxx/id6446701354 (this page in markdown: same URL + `.md`) - Developer: [NNOXX Inc](https://appshunter.io/developer/1678806344) - Category: Health & Fitness, Sports - Price: Free - Rating: 5.00/5 from 4 App Store ratings - Age rating: 12+ - Requires: iOS 14.0 · 50 MB - Languages: English - Released: 2023-08-24 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/nnoxx/id6446701354/reviews.md ## What is NNOXX? It’s time to ensure you are making the most of your workouts! NNOXX One is the first wearable and app combination that can monitor your muscle oxygenation (SmO2) and nitric oxide (NO) levels in real-time as you exercise. Why is it important to monitor SmO2 and NO levels? • Exercise works by increasing nitric oxide levels in your body, widening your blood vessels and improving blood flow to your heart, brain and muscles. • Muscle oxygenation is the level of oxygen in muscles and the best indicator of exercise intensity and muscle recovery. • Together, muscle oxygenation and nitric oxide are the best way to measure the effectiveness and efficiency of your workout. Combined with the NNOXX One wearable device, the NNOXX One app monitors your NO and SmO2 levels and incorporates a personalized AI coach who will guide you to make the most of each of your workouts. How does it work? • Choose your favorite workout and how long you want to work out. • Place the NNOXX One wearable on the working muscle. • Start your workout and your NNOXX One AI coach will immediately begin monitoring your muscle oxygenation and nitric oxide levels. • Follow the AI coach as it guides you through the most effective and efficient workout for maximizing your nitric oxide levels. • Track your progress over time as NNOXX One stores your workout data. NNOXX One is perfect for anyone who is looking to make the most of their workouts, from fitness enthusiasts to elite athletes. NNOXX One has been tested by world class athletes and their trainers. “This new non-invasive wearable gives us the opportunity to measure active nitric oxide concentrations in our athletes, which, in turn, can give us data and recommendations on programming our training to improve our athlete's performance based on their individual performance markers.” - Daru Strong Performance Center Need a NNOXX One device? Check out our website (www.nnoxx.com) for more information and to purchase. Questions, suggestions or other feedback on NNOXX One? Please email us at support@nnoxx.com. Like NNOXX One? Please leave us a review! ## Key features - Real-time SmO2 and NO monitoring - Personalized AI coach - Workout effectiveness measurement - Progress tracking - Guidance for nitric oxide maximization - Wearable device integration ## Frequently asked questions about NNOXX ### What is NNOXX? NNOXX is a health and fitness app that works with the NNOXX One wearable device to monitor muscle oxygenation (SmO2) and nitric oxide (NO) levels in real-time during workouts. It provides an AI coach to guide users for more effective training. ### How does NNOXX help improve workouts? NNOXX monitors key physiological markers like SmO2 and NO, which are indicators of exercise intensity and blood flow. By tracking these, the app's AI coach can guide users to optimize their workouts for better performance and recovery. ### What devices does NNOXX support? NNOXX is available for iPhone, iPad, and iPod. It requires the NNOXX One wearable device to function. ### Is NNOXX free to use? Yes, the NNOXX app is free to download and use. However, it requires the purchase of the NNOXX One wearable device, which can be found on their website. ### How often is NNOXX updated? The latest version of NNOXX is 2.0.39, which was last updated on September 3, 2025. Updates are released to improve functionality and user experience. ### What is the age rating for NNOXX? NNOXX has an age rating of 12+, making it suitable for teenagers and adults interested in optimizing their fitness routines. ### Does NNOXX have ads? No, NNOXX does not contain advertisements. As a free app, it focuses on providing a clean user experience without interruptions from ads. ### Where can I buy the NNOXX One wearable device? You can find more information and purchase the NNOXX One wearable device by visiting their official website at www.nnoxx.com. ## Version history (last 5 releases) ### 2.0.39 — 2025-09-03 * Display profile picture * Security enhancements * Bug fixes ### 2.0.32 — 2025-05-21 * Bug fixes ### 2.0.29 — 2025-04-03 * New feature: Email and download raw workout data from app * Bug fixes ### 2.0.28 — 2025-03-28 * New feature - Share workouts * New feature - Add Notes to workouts * Connectivity improvements * Bug fixes ### 2.0.18 — 2025-02-08 * Bug Fixes ## Apps similar to NNOXX | App | Rating | Price | Category | | --- | --- | --- | --- | | [Fitto: Build your ideal body](https://appshunter.io/ios/app/fitto-build-your-ideal-body/id1601917023) | 2.5 (2) | Free | Health & Fitness | | [Metatracker Pro](https://appshunter.io/ios/app/metatracker-pro/id1290814302) | 3.2 (18) | Free | Health & Fitness | | [Train.Red APP](https://appshunter.io/ios/app/trainred-app/id6451237438) | 5.0 (1) | Free | Health & Fitness | | [Moxy Portal App](https://appshunter.io/ios/app/moxy-portal-app/id1566649779) | 5.0 (3) | Free | Health & Fitness | | [Morpheus Coach](https://appshunter.io/ios/app/morpheus-coach/id1536347218) | 5.0 (2) | Free | Health & Fitness | | [Calibre Biometrics - LEGACY](https://appshunter.io/ios/app/calibre-biometrics-legacy/id1609706655) | 3.6 (10) | Free | Health & Fitness | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*