EMF Detector - EMF Scanner

EMF Detector - EMF Scanner

Discover magnetic field changes around you using the magnetometer built into your Android phone. EMF Detector by SIYA Apps combines a live magnetic field meter, a microphone-based sound estimate, electrical calculators and sensor information in one practical toolkit.

Magnetic Field Meter
Read your phone's magnetic sensor in microtesla (µT). Explore four field views: Live Field, Compare, Zero Meter and Axes. Compare changes in sensor readings as you move your device and save selected results in your local Journal.

Sound Level Estimate
Use the microphone when you choose to start a sound measurement. See an amplitude-based estimate and stop capture when you're finished. The sound feature does not save or upload audio recordings.

15 Electrical Calculator Modes
Enter values and units to explore electrical formulas with 15 calculation modes. See calculated results in a clear, easy-to-read format.

Sensor Library and Journal
Explore the sensors reported by your device. Keep selected magnetic readings in a local Journal and delete saved entries when you no longer need them.

Everyday Tools, Your Choice
Use light or dark mode. Core measurement and calculation tools work without an account and remain available offline. Advertising privacy choices are available where required.

Measurement Notes
Magnetic field readings depend on the phone's hardware, position and surrounding environment. This app uses a magnetometer, not a general radiofrequency or radiation detector; it cannot measure Wi-Fi or radioactivity. Sound readings are amplitude-derived estimates, not calibrated sound pressure levels (SPL/dBA). The app does not determine health risks or replace professional measurement equipment.