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Wing makes monitoring asthma simple.
With Green, Yellow, and Red stoplight zones, you'll never be left guessing.
Wing seamlessly tracks your data over time. Wing does the hard work for you.


No batteries — no charging.

Pocket-size — use it anywhere.

Durable — no moving parts.

Easy to Clean — just soap and water.


Blast off into space to discover new planets, customize your spaceship, earn rewards, and explore the galaxy!


Wing measures Peak Flow & FEV1 with medical–grade accuracy. Cleared by the FDA, Wing provides data you can trust. Wing also has built-in error detection and automatic reproducibility checks.


Wing helps you stay one step ahead with Personal Best goals and intelligent reminders.


Your account is securely synced to the cloud using 256-bit encryption.

Easily share data reports directly with your family or doctor.


Wing isn't your average peak flow meter.

Track and visualize everything that impacts your asthma like medications, triggers, and symptoms to see the full picture.


  • 3.2 x 2.4 x 1.5 inches (81 x 61 x 37mm)
  • 0.15 lb (70g)
  • Apple: iPhone 5 or later (iOS 9 or later)*
  • Android: Coming 2017
  • *For iPhone 7 or 7+, simply use Apple’s included "Lightning to Headphone Jack” adapter.

  • Adults and Children aged 5 and up
  • Over-the-Counter
  • Meets ATS standard for measuring FEV1 & Peak Flow
  • FEV1: ±5% or 0.1L
  • Peak Flow ±10% or 20L/min
  • Green Zone: 100-80% Reference Peak Flow
  • Yellow Zone: 79-50% Reference Peak Flow
  • Red Zone: 0-49% Reference Peak Flow
  • FDA-Clearance (Class II Medical Device)
  • IEC 60601-1 (Electrical Safety)
  • IEC 60601-1-2 (Electromagnetic Compatibility)
  • IEC 10993-1 (Biocompatibility)