Best Co2 Sensor Apps

Air Quality & Pollen - AirCare

Air pollution, pollen and UV

Free

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.

Aranet Home

Indoor air quality monitoring

Free

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.

Detector CO2

by Geotap Games S.L.

Free

Measure ambient CO2 levels using a compatible device. This utility app provides environmental data for your surroundings.

My AQI Air Quality & Pollution

Live PM2.5, Smog Map & Widget

Free

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.

LightFi Air

Indoor Air Quality Sensor App

Free

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.

IndoorCO2Map Data Collector

by Aurel Wuensch

Free

Contribute to a citizen science project by collecting indoor CO2 concentration data in public buildings. Use a supported CO2 sensor and this application to build a comprehensive dataset for analysis.

Birdie - Fresh Air Company

Birdie

Free

Monitor indoor air quality, including CO2, temperature, humidity, and mold risk. It also tracks local pollen levels and outside air quality using Google APIs. View historical data and access educational content on indoor climate.

iAir by ICPDAS

A real-time air quality app.

Free

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.

CO2 on Watch & Lockscreen

For Aranet4, Airvalent Inkbird

Free

Monitor CO2 levels from compatible devices directly on your Apple Watch and iPhone Lock Screen. Receive smart alerts and view real-time air quality data with color-coded visuals for quick understanding.

True Safety

by KINIPOP LLC

Free

This app utilizes professional-grade electrochemical sensor technology to detect carbon monoxide at levels typically ignored by standard consumer detectors. It brings advanced safety monitoring, previously exclusive to hospitals and industrial sites, directly to your device.