Magnetic Sensor | Magnetometer

Contains ads
4.5
11.6K reviews
100K+
Downloads
Content rating
Everyone
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About this app

Turn your device into a professional-grade magnetic sensor toolkit.
Measure magnetic fields with precision and navigate confidently using your phone's built-in hardware. This app transforms your device into a reliable EMF meter, Gauss meter, and offline compass. Designed for teachers, students, DIY enthusiasts, and outdoor adventurers, it provides clear, real-time data without the gimmicks.
🚀 Key Features
• Precise EMF & Magnetic Field Meter: Monitor magnetic field strength in real-time using 3-axis (X/Y/Z) magnetometer data. View accurate readings in microtesla (µT) to detect magnetic interference or strength.
• Offline Compass for Navigation: Access a dependable compass that works without mobile data or Wi-Fi. Perfect for hiking, camping, and orienting yourself in remote locations.
• Custom Alerts & Thresholds: Set your own specific limits. Receive instant notifications when the magnetic field exceeds your chosen threshold.
• Professional Data Logger: Record your sensor readings over time. Review detailed logs directly within the app—ideal for science experiments, diagnostics, and comparative analysis.
• Live Sensor Analysis: Visualize vector changes and monitor live values to pinpoint areas of elevated magnetic strength.
• Device Sensor Diagnostics: Instantly verify the health and status of your device’s magnetometer, accelerometer, and gyroscope.
💡 Practical Use Cases
• Home & DIY: Check magnetic field levels near speakers, power supplies, electronics, and magnets.
• Education & Science: A perfect tool for classroom demonstrations, physics experiments, and research projects requiring data logging.
• Outdoor Adventure: Use the offline compass for orientation on trails where GPS or internet signals may be weak.
⚠️ Compatibility & Important Notes
• Hardware Requirement: This app relies on your device’s built-in magnetometer sensor. If your device lacks this sensor, magnetic measurement features will not function.
• Factors Affecting Accuracy: Readings depend on the quality of your device’s sensor and calibration. Metal objects, thick cases, and nearby magnetic interference can impact results.
• Scope of Measurement: This tool measures magnetic fields only. It does not detect ionizing radiation, radiofrequency (RF) signals (such as Wi-Fi or 5G), or electric fields. It is not a medical device and should not be used for health-critical diagnostics.
Download now to get precise magnetic readings, log your sensor data, and navigate offline with a clean, dependable tool.
Updated on
Jan 20, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Device or other IDs
This app may collect these data types
Device or other IDs
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.5
11.4K reviews
alkowa i
July 24, 2023
Worst possible app in the world. I understand the need for adverts to create revenue but literally everywhere you click is a 30 second ad that takes you to google play and when you go back to the app, you have to rewatch the same stupid ad. Can't pay for something i can't fully test
32 people found this review helpful
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Mypro
November 10, 2023
Hello,You can try the pro version, in the pro version, you'll enjoy an ad-free experience as ads are removed for your convenience
J
October 10, 2022
Simple test put around pull it away magnet works right. No complains about just to test it. Some phones may not have the right sensors. When test it go to tool and check if your phone has the sensor the app needs. You need to download that app. Yes you will get ads but if your going to buy it. Take the time to check it out.
60 people found this review helpful
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Charudatta Galande
January 11, 2026
bought the pro version because the video ads were annoying. the pro version was buggy -- app crashed multiple times when I tried to use sensor test function. requested immediate refund.
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