O? Calculator Companion

Your essential EMS companion app — designed for rapid, accurate oxygen supply calculations combined with real-time travel estimates. Be ready, be precise, save lives.

Key Features

• Accurate oxygen duration based on PSI, tank size, and flow rate
• Integrated Google Maps travel time & distance for real-world planning
• Dynamic, color-coded alerts for oxygen sufficiency levels
• AI-generated recommendations tailored for EMS field use
• Seamless support for light, dark, and system appearance modes
• Optimized experience for both iPhone and iPad devices

Trusted by EMS crews, firefighters, and medical transport professionals for safer, faster oxygen management and patient care.