Breathing Coach - Nostril

Breathe Better, Sleep Deeper

Only for iPhone

Free · In‑App Purchases

iPhone

Track your breathing overnight with on-device AI. Three independent classifiers analyze every breath while you sleep. No audio uploaded, ever. You breathe 20,000 times a day. Most of them through your mouth, without even knowing it. Mouth breathing leads to poor sleep, low energy, dry mouth, and anxiety. Nostril helps you switch to nasal breathing with daily tests, guided exercises, and overnight sleep tracking so you can feel the difference in days, not months. MEASURE YOUR BREATHING FITNESS Take the Control Pause test to measure your body's CO₂ tolerance, the most reliable marker of how well you breathe. Track your score over time and watch it climb as your habits improve. TRACK YOUR SLEEP (Premium) Place your phone on the nightstand and let Nostril listen overnight. Wake up to a clear breakdown of nasal vs. mouth breathing, snoring episodes, and trends across nights. All audio is processed entirely on your device. Nothing is ever recorded, stored, or uploaded. RESET IN 60 SECONDS Feeling stressed? The guided Reset session walks you through 60 seconds of slow nasal breathing with gentle haptics and visual cues. Inhale 4 seconds, exhale 6. Log your mood after each session to see the pattern. SEE YOUR PROGRESS (Premium) Charts, streaks, and a year-long heatmap show how far you've come. Dive into detailed sleep analytics, weekly compliance scores, and Control Pause trends, all in one place. BUILD THE HABIT Set daily check-in reminders that ask one simple question: are you breathing through your nose right now? Over time, awareness becomes automatic. PERSONALIZED FROM DAY ONE A quick assessment during setup analyzes your breathing patterns, sleep quality, and symptoms to give you a personal breathing score and focus areas tailored to you. PRIVACY FIRST Sleep tracking uses on-device audio analysis with multiple AI layers. No audio is saved. No data leaves your phone. Ever. Terms of Use (EULA): https://deadpixel-studio.com/en/terms_of_use Privacy Policy: https://deadpixel-studio.com/en/privacy_policy

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Bug fixes and improvements based on early feedback. Thank you so much for your support!

Version 2026.27

The developer, DeadPixel Studio UG (haftungsbeschrankt), indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

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    Information

    Seller
    • DeadPixel Studio UG (haftungsbeschrankt)
    Size
    • 36.1 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    • Apple Vision
      Requires visionOS 26.0 or later.
    Languages
    English and 6 more
    • English, French, German, Italian, Portuguese, Simplified Chinese, Spanish
    Age Rating
    13+
    • 13+
    • Learn More
    • Infrequent
      Medical Treatment information

      Contains
      Health or Wellness Topics
    In-App Purchases
    Yes
    Copyright
    • © 2026, DeadPixel Studio UG
  • Developer Website
  • Privacy Policy

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