Monitor carbon dioxide levels remotely and receive real-time readings and push notifications when levels become unhealthy. Stay on top of air quality and take action to improve ventilation and keep your environment safe.






218+ iOS apps curated and reviewed
If you already know CO2 sensor, this is the deeper bench. 218+ co2 sensor apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of May 2026.









Monitor carbon dioxide levels remotely and receive real-time readings and push notifications when levels become unhealthy. Stay on top of air quality and take action to improve ventilation and keep your environment safe.

Monitor your indoor air quality by displaying real-time CO2 levels from a compatible wireless sensor. Get essential environmental insights at a glance.


Monitor and track air quality in real-time with this app. Get updates on pollution levels and receive notifications for healthier living. Take control of your environment today.


Monitor indoor air quality with the Aranet Home app, connecting all Aranet sensor devices for comprehensive data. Access real-time measurements, historical data storage, customizable widgets, and more. Visit aranet.com for details and sensors.






Monitor and predict air quality levels in your area with real-time data and personalized alerts. Stay informed about pollution levels and take proactive steps to protect your health and well-being.




This app pairs with wireless sensors to monitor temperature, humidity, and air quality in real-time, sending alerts and tracking historical data for home and professional use. Download to stay informed about your environment and take control with ease.


This app tracks and displays live indoor air quality data, including Carbon Dioxide levels, from multiple sensors, helping you monitor and improve the air quality for a healthier and more productive environment. Download the app to start monitoring your indoor air quality and take action to reduce CO₂ levels and improve your well-being.


This application provides an overview of gas and vapor measurement technology, including principles, measurement systems, and listings of tubes, chips, sensors, and monitors. It also offers support resources, such as sensor compatibility charts, how-to videos, and error code charts, to help users understand and utilize the technology effectively.


This air quality app remotely monitors Carbon Dioxide, Carbon Monoxide, temperature, and humidity levels in real-time, connecting to devices via Ethernet or Bluetooth. Download the app to get instant readings and send messages to your monitoring devices.






Remotely monitor any location with a 3-in-1 sensor that tracks temperature, humidity, and power status in real-time. Easily set up and customize alerts to stay informed about your environment and have peace of mind knowing your property's conditions are being monitored.


Help create a comprehensive dataset of indoor CO2 levels in non-residential buildings by collecting data with a supported CO2 sensor. By using this app, you can contribute to a citizen data collection initiative and help map CO2 concentrations in shops, restaurants, hospitals, and more.




Experience the future of CO2 exchanges with an iOS app that simplifies ordering, offers competitive rates, and ensures convenience. Say hello to effortless exchanges, easy updates, and substantial savings on every transaction. Download now for a seamless carbonation journey.


This application allows users to connect environmental monitoring devices via Bluetooth and visualize their surroundings in real-time, tracking historical data and patterns. By using this app with compatible smart gadgets, users can gain insights into environmental events and export data for comparison.