Mouthbreather

Mouthbreather is a privacy-focused desktop application that uses on-device artificial intelligence to detect mouth breathing and help users build healthier breathing habits. Designed for macOS and Windows, it runs unobtrusively in the background and provides real-time feedback to encourage nasal breathing throughout the day.

Key Features

• On-device AI mouth detection that tracks lip position and identifies mouth breathing episodes. The model processes all data locally, ensuring no personal information is transmitted to external servers
• Real-time reminders delivered through sound alerts or system notifications whenever mouth breathing is detected. Users can choose the alert type that best suits their environment
• Menu bar integration for macOS and system tray presence on Windows. The app icon flashes when the mouth is open, providing a subtle and non-intrusive visual cue that builds awareness over time
• Complete privacy-first design with local-only processing. The AI model runs entirely on the user device and works fully offline, eliminating concerns about cloud-based health data processing
• Usage insights that track mouth breathing incidents over time, including streak data and aggregate statistics to help users monitor their progress and identify patterns

Use Cases

• Habitual mouth breathers who want to build awareness of their breathing patterns and develop the habit of nasal breathing through consistent real-time feedback
• Health-conscious individuals looking to improve sleep quality, oxygen efficiency, and overall respiratory function. Mouth breathing has been linked to reduced blood oxygen levels, fatigue, and increased risk of sleep apnea
• Privacy-aware users who prefer health-related applications that process sensitive data entirely on their own device without requiring an internet connection or cloud account
• People preparing for sleep or focused work who want to maintain nasal breathing during periods when mouth breathing is most likely to occur unconsciously

Platform and System Requirements

Mouthbreather is available for macOS 15 and Windows 11. The application is designed to be lightweight and runs from the system menu bar with minimal impact on system resources. No account creation or internet connection is required for the app to function, as all AI processing happens locally on the device.

Privacy and Security

The application processes all video data exclusively on the user device. No images, video frames, lip position data, or breathing statistics are ever uploaded to external servers. The app can operate entirely offline, making it suitable for use in environments where internet connectivity is limited or where users require strict data locality.

About the Developer

Mouthbreather is developed by adlerlagune OG, a small software agency based in Vienna, Austria. The company offers the application free of charge, supported by its client-facing software development and white-label work rather than direct product revenue.