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.
2.8(15 ratings)
Free
Top Picks for Free Carbon Monoxide Detector
2.7(3 ratings)
Free
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.
OTG CO Leak Detector by Baby Alert International Inc
Indoor Air SafetyWorth Considering
ð Lifestyle
0.0(0 ratings)
Free
More Free Carbon Monoxide Detector apps to explore
4
C02 Monitor
requires a wireless CO2 sensor
Free
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.
Remote CO2 monitoringReal-time data displayCompatible with wireless sensors
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(2)
free5
Tracer - Gas Detector
for various gas leak detection
Free
This app works with a smartphone-powered USB device to detect various gas leaks like methane and formaldehyde. It provides real-time monitoring and alerts to enhance safety at home or work. Pinpoint emission sources effortlessly for peace of mind.
Detects methane, propane, formaldehyde, hydrogenSmartphone-powered via USBReal-time monitoring and alerts
ð§ Utilities
(1)
ad-supported6
SPARROW - CO & Air Quality
Eco Sensors
Free
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.
Real-time CO level displayCustomizable warning levelsExposure tracking and graphing
ðŠ Health & Fitness
(7)
free7
Nest
by Nest Labs, Inc
Free
Control your smart home devices, including thermostats, security systems, cameras, and smoke detectors, all from a single app. Receive alerts, manage schedules, and automate actions based on your presence.
Remote thermostat controlArm/disarm security systemLive camera feeds
ð Lifestyle
(2.5M)
free with in-app purchases8
NSI CO Monitor
NSI CO Monitor Companion App
Free
This app syncs with Bluetooth-enabled carbon monoxide monitors to view stored measurements and logs. It serves as a mobile companion for devices like the NSI 6000.
Syncs with Bluetooth CO monitorsView stored carbon monoxide measurementsAccess monitor logs
ð§ Utilities
(0)
free9
Ghost Detector - Spirit Box
Ghost Hunting Camera Tracker
Free
Simulate a ghost hunting experience using your device's sensors. Detect sound waves with the microphone, visualize magnetic fields with the magnetometer, and apply special camera filters to create a spooky atmosphere. Record your investigations and share them with others.
Microphone sound wave detectionMagnetometer magnetic field visualizationAdjustable magnetometer sensitivity
ðŽ Entertainment
(5.2K)
free with in-app purchases10
Metal Detector EMF
Find metals and magnetic field
Free
This application uses your smartphone's magnetic sensor to detect nearby metal objects. It can help you find hidden metallic items, act as a treasure hunting tool, or even assist in ghost hunting by visualizing magnetic field trends. Requires a device with a magnetic sensor to function.
Detects nearby metalMeasures magnetic fieldFinds hidden metallic objects
ð§ Utilities
(2.2K)
free with in-app purchases11
Ghost detector spirit hunter
Real Camera Radar
Free
Detect paranormal activity and spirits using your device's sensors and camera. Explore haunted locations, capture evidence, and create maps of potential ghost activity. Designed for ghost hunters and paranormal investigators.
Paranormal activity detectionSpirit communicationGhost radar mapping
ðŽ Entertainment
(4K)
free with in-app purchases12
Metal Detector for iPhone
by nakhon phagdeechat
Free
Detect metal objects by measuring the magnetic field around you. The app uses your device's built-in sensor to display magnetic field trends and alerts you with sound when a strong signal is detected, indicating a potential metal object. Customize alerts, lighting, and themes for a personalized experience.
Magnetic field measurementTrend displaySound alerts
ð§ Utilities
(348)
ad-supported13
Nearby Device Detector: Scan
Device Detector and Spy Finder
Free
Scan your current network for suspicious devices and identify hidden cameras or bugs using advanced AI and Wi-Fi scanning. Protect your privacy in hotels, public spaces, and more by ensuring your environment is safe.
Detect suspicious devices on Wi-FiAI-powered spy device detectionFetch device details
ð Lifestyle
(1.8K)
subscription14
Onelink Home by First Alert
by First Alert / BRK Brands
Free
Manage and monitor your connected home devices, including smart smoke and carbon monoxide alarms. Receive emergency notifications and enjoy premium audio and voice commands with integrated smart assistants.
Device installation and pairingReal-time monitoringSmoke and CO emergency notifications
ð Lifestyle
(295)
free15
Detector:Find Lost/Spy Device
Find The Lost or Spy Devices
Free
Detect hidden spy devices like cameras and microphones using advanced technology. This app helps you safeguard your privacy by scanning for Bluetooth, magnetic fields, infrared, and Wi-Fi signals. Restore peace of mind by unmasking intrusive gadgets in your surroundings.
Multi-faceted detection (Bluetooth, magnetic, infrared, Wi-Fi)User-friendly interfaceReal-time alerts
ð§ Utilities
(365)
ad-supported16
Wynd Air Tracker and Purifier
Air Quality Tracker & Solution
Free
Monitor indoor and outdoor air quality with real-time data on various pollutants, temperature, and humidity. Track personal exposure over time and control smart air purifiers remotely for a cleaner environment.
Real-time indoor air quality dataReal-time outdoor air quality dataPersonal air quality exposure tracking
ðŠ Health & Fitness
(304)
free17
Flame Boss
by Collins Research, Inc.
Free
Remotely monitor and control your cooking with a Wi-Fi smoker controller or thermometer. View temperature graphs, adjust settings, and receive text alerts for your pit and meat. Share your progress and save cook details for future reference.
Remote temperature monitoringAdjust set temperatureText alerts for pit/meat
ð Food & Drink
(2.3K)
free18
Smart Metal Detector
by NETIGEN KLUZOWICZ SPOLKA JAWNA
Free
This tool uses your phone's magnetic sensor to detect nearby metal by measuring magnetic field strength. It alerts you with vibrations and sounds when metal is close, and can help locate hidden devices or electrical wires.
Detects metal using magnetic sensorMeasures magnetic field strength (EMF)Vibration and sound alerts
ð§ Utilities
(257)
free with in-app purchases19
Thermometer-Room&Indoor Track
Smart Indoor & Outdoor Temps
Free
Monitor indoor and outdoor temperatures in real time with detailed historical data and trend charts. Track temperatures from multiple locations simultaneously and access basic environmental data and converters.
Real-time temperature trackingHistorical data and trend chartsMulti-location monitoring
ð§ Utilities
(255)
free with in-app purchases20
Home + Security
Cameras, Detectors and Alarms.
Free
Monitor your home remotely with smart security devices. Receive instant alerts for visitors, break-ins, smoke, and carbon monoxide. Control cameras, doorbells, and alarms from your smartphone for peace of mind.
Remote doorbell answeringIntruder alerts with sirenPerson/animal/vehicle detection
ð Lifestyle
(375)
free with in-app purchases