Monitor CO2, temperature, and humidity levels in real-time using a Bluetooth sensor. Save readings with location data and sync them across Apple devices via iCloud. View historical data on a map.






224+ iOS apps curated and reviewed
If you already know CO2 sensor, this is the deeper bench. 224+ co2 sensor apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of July 2026.






Monitor CO2, temperature, and humidity levels in real-time using a Bluetooth sensor. Save readings with location data and sync them across Apple devices via iCloud. View historical data on a map.



Monitor carbon dioxide levels remotely from your devices. Receive real-time readings and push notifications for unhealthy air quality. Optimize ventilation and know when to open windows for better air.

This application displays real-time CO2 levels from compatible wireless sensors. It provides a remote view of indoor air quality, helping users monitor their environment.




Track real-time air quality, pollen levels, and UV index globally. Get detailed pollutant breakdowns, wildfire alerts, and AI-powered insights. Pro features include widgets, notifications, and extended data access.




Monitor indoor air quality with a unified app for various sensor devices. Track CO2, temperature, humidity, atmospheric pressure, and radiation levels. Receive smart alerts and analyze historical data with easy-to-read charts.


Check real-time air quality and pollution levels for your current location or any city worldwide. Understand the concentration of various pollutants and receive alerts for unhealthy conditions. Find protection equipment and manage respiratory health.




Monitor temperature, humidity, and air quality with wireless sensors. Get real-time data, alerts, and historical tracking on your smartphone or tablet. Suitable for home and professional environments.


Monitor your indoor air quality by displaying live Carbon Dioxide (CO₂) levels and other sensor data from connected devices. The app helps you understand your environment's impact on health, well-being, and productivity, suggesting actions like increasing ventilation when levels are high.


Monitor real-time air quality including CO2, CO, temperature, and humidity remotely. Connects to specific hardware devices via Ethernet or Bluetooth to display measurements. Organize devices into groups for simultaneous monitoring.


Monitor your indoor air quality with this companion app for a specific device. Analyze data, identify pollution sources, and take steps to improve your health and performance.


Explore gas and vapor measurement technology with this app. It details Dräger-Tube, Dräger Sensor, and Dräger Chip systems, offering comprehensive listings of tubes and chips with measurement parameters. Learn about portable monitors and access support resources like compatibility charts and how-to videos.






Monitor local air quality for particulate matter and adapt your daily activities to avoid health risks. Get real-time data and convenient widget access for at-a-glance information.


This app connects to a portable device to provide real-time insights into the air you breathe, both indoors and outdoors. Monitor pollutants like CO2 and PM2.5, track environmental factors, and receive alerts for unhealthy air quality to make informed health decisions.


This app works with a portable carbon monoxide monitor to provide real-time air quality data and safety alerts. It displays CO levels, tracks exposure over time, and can send emergency text alerts to a designated contact.


Monitor environmental conditions with real-time data and historical graphs. This app visualizes temperature, humidity, and CO2 levels from a compatible Wi-Fi sensor.