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.

167+ iOS apps curated and reviewed
With an average user rating of 4.5★, the c02 monitor category is one of the App Store's strongest. Browse all 167+ apps we track, sorted so the most loved ones surface first.

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.






Monitor blood oxygen levels and heart rate using your phone's camera or by syncing with your Apple Watch. Track vital signs, share data with your doctor, and access curated health articles. Includes breathing exercises and sleep reports.






This app provides comprehensive system activity information for Apple devices, including detailed insights into hardware, sensors, and network status. It offers privacy controls, customizable widgets, and advanced testing and reporting features through optional in-app purchases.


Monitor your iPhone and iPad's performance with detailed insights into CPU, memory, disk, battery, and network usage. View real-time graphs, hardware specs, and system details. Export data via email or AirPrint.


Monitor your device's core performance metrics with this utility app. It provides real-time information on battery status, disk usage, CPU load, and network connections. Customize your view with light or dark themes and receive instant updates on system changes.


This app provides detailed insights into your device's specifications, including display, hardware, network, camera, and battery information. It also offers a suite of tools like a storage cleaner, internet speed test, and network scanner. Enhance your device management with comprehensive system monitoring and utility features.


Transforms multiple devices into wireless on-set monitors for video production. Enables real-time multi-camera monitoring, communication with the operator, and collaborative metadata editing. Offers a low-latency viewing experience for both 2D and immersive 3D content.


Monitor your device's system activity and performance with detailed tracking of storage, memory, network, and battery usage. Customize graphs and widgets for instant insights, with cloud sync available. Upgrade to Pro for advanced features and comprehensive data.


This app provides continuous glucose monitoring for individuals with diabetes. It automatically updates glucose readings to your phone every minute and offers insights into trends and settings. Compatible with specific FreeStyle Libre sensors, it aids in managing diabetes by tracking glucose levels.


Transform your phone into a professional camera monitor with live view and remote control capabilities. Access camera content, utilize advanced assist functions, and even record live feeds. A Pro version unlocks even more powerful features for enhanced filmmaking.


This app helps individuals manage their diabetes by tracking blood sugar, medication, and carb intake. It offers educational content, meal planning assistance, and data export for healthcare providers. Premium features provide advanced analytics and integrations.


Monitor your iOS device's system status with detailed information on disk, network, cellular data, and RAM. View real-time specifications like battery, boot time, and uptime. This app offers an elegant and simple interface for offline use.


This app helps users track blood sugar, weight, blood pressure, and medications to manage diabetes. It offers features like data logging, trend identification, customizable reminders, and report generation for healthcare professionals. An estimated A1C calculator is also included.


Monitor your baby from anywhere with a secure, crystal-clear HD view. This app allows you to check room temperature, speak to your baby, and play soothing sounds. Premium features offer advanced sleep tracking and cry interpretation.


Transform two iOS devices into a video and audio baby monitor with unlimited range. Works over Wi-Fi or cellular, offering live HD video, clear audio, and reliable alerts. Enjoy peace of mind with a private, secure, and easy-to-set-up solution for monitoring your baby anywhere.


This app transforms your Apple Watch into a Bluetooth heart rate monitor. It broadcasts your heart rate to various gym equipment and popular fitness applications, eliminating the need for a chest strap. Train effectively with real-time effort tracking and personalized heart rate zones.


Monitor your car's performance, diagnose engine issues, and view sensor data in real-time. Customize your dashboard with gauges and charts, and reset fault codes. Supports a wide range of vehicles and offers advanced features for specific car brands.


This app helps manage diabetes by tracking blood sugar, medication, and A1C levels. It offers a food database for carb intake logging, activity tracking, and educational content. Premium features provide advanced analytics and integrations.


Transform your iPad or iPhone into a secondary display for your Mac using a USB connection. Enjoy lag-free browsing and video playback, utilize touch gestures like pinch-to-zoom, and enhance multitasking with Split View. This free version offers a 7-minute session limit.


This utility app provides in-depth hardware information for your device, including CPU, battery, display, and network diagnostics. It offers real-time monitoring and detailed specs in an easy-to-read format, ideal for troubleshooting or understanding your device's capabilities.