Magnetic Sensor | Magnetometer

Contains ads
11.9K reviews
Content rating
Everyone
100K+
Downloads
Content rating
Everyone
Learn more
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About this app

Turn your phone into a magnetic field meter (EMF Detector & Gauss meter) and offline compass — no extra hardware needed. Using your device's built-in magnetometer, this app displays real-time Gauss meter readings, 3-axis (X/Y/Z) field data, and offline navigation, all in one clean toolkit. Designed for teachers, students, DIY enthusiasts, and outdoor adventurers.

🚀 Key Features

- Magnetic Field Meter (EMF Detector / Gauss Meter): Monitor magnetic field strength in real time using 3-axis (X/Y/Z) magnetometer data. Readings are shown in microtesla (µT) to help you spot magnetic interference or changes in field strength.

- Offline Digital Compass: A compass that works with no mobile data or Wi-Fi — useful for hiking, camping, and orienting yourself in remote locations.

- Custom Alerts & Thresholds: Set your own magnetic field limits and get a notification when a reading crosses your chosen threshold.

- Data Logger: Record sensor readings over time and review the logs inside the app — useful for science experiments, comparisons, and simple diagnostics.

- Live Sensor Analysis: Visualize vector (X/Y/Z) changes in real time and spot when magnetic strength rises.

- Sensor Diagnostics: Check whether your device's magnetometer, accelerometer, and gyroscope are present and reporting data.

💡 Practical Use Cases

- Home & DIY: Check magnetic field levels near speakers, power supplies, electronics, and magnets.

- Education & Science: A tool for classroom demonstrations, physics experiments, and projects that involve data logging.

- Outdoor Navigation: Use the offline compass to help stay oriented on trails where GPS or signal is weak.


⚠️ Compatibility & Important Notes

- Hardware Requirement: This app relies on your device's built-in magnetometer. If your phone doesn't have this sensor, magnetic measurement features will not function.

- Accuracy Factors: Readings depend on the quality and calibration of your device's sensor. Metal objects, thick cases, and nearby magnetic interference can affect results. This is a consumer tool, not a calibrated scientific or medical instrument.This app measures magnetic fields only. It does not detect ionizing radiation, radiofrequency (RF) signals (such as Wi-Fi or 5G), or electric fields.


Download now to get magnetic field readings, log sensor data over time, and navigate offline with a simple, dependable tool.
Measure magnetic fields, EMF & Gauss readings, plus an offline compass
Updated on
Aug 15, 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

11.7K 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
34 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
Waylon Palmer
July 21, 2026
I used to for ghosts detecting that's pretty good
1 person found this review helpful
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agamerawesome “Albert Adamovic”
September 4, 2026
filled with ads like every other app in 2026
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