Find metal with your phone — big gauge, beeping alerts and vibration
About Metal Detector: EMF Gauge
Metal Detector: EMF Gauge is a tools app developed by ToolToolNam.
Download Statistics
Metal Detector: EMF Gauge has been downloaded 66 times. In the last 30 days, the app was downloaded 66 times.
User Ratings
The app has no ratings yet.
App Information
Metal Detector: EMF Gauge is FREE to download. The APK download size is 18.88 MB. The latest version available is 1.0.3. The last update was on August 27, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play 4 weeks ago.
Description
Turn your phone into a metal detector. Metal Detector reads your phone's built-in magnetic sensor and shows nearby metal on a big analog gauge — the needle climbs, the beeping speeds up, and the phone vibrates harder as you get closer.
Sweep your phone slowly over a surface. When metal comes near, the magnetic field around it is disturbed, the needle jumps, and a large METAL DETECTED alert appears on screen.
KEY FEATURES ▸ Large analog gauge with a smooth moving needle ▸ Beeping that speeds up as the signal gets stronger (Geiger-counter style) ▸ Vibration feedback that grows with the signal ▸ One-tap calibration to zero out the background field ▸ Sensitivity slider — from strong metal only to fine wires and small nails ▸ Signal levels: Weak, Normal, Strong and Very Strong ▸ Detection log that records when strong signals were found ▸ Field strength in µT for those who want the raw number ▸ Light and dark themes
WHAT PEOPLE USE IT FOR ▸ Treasure hunting games in the yard or at the beach ▸ Camping and outdoor trips ▸ Finding nails, screws, coins and keys ▸ Checking for wiring or pipes behind a wall before drilling ▸ Playing detective with the kids ▸ Satisfying plain curiosity about what is hidden nearby
CALIBRATION MAKES IT WORK Hold the phone still, away from metal, and tap Calibrate. That sets the current magnetic field as your zero point, so the Earth's own field and any fixed metal nearby are cancelled out. Only new, local disturbances register as a signal. Recalibrate whenever you move to a new spot.
PRIVATE BY DESIGN Everything runs on your device. No location is collected, nothing is uploaded, and no internet connection is required to detect.
IMPORTANT — HOW IT WORKS Metal Detector estimates nearby metal using your phone's built-in magnetic (magnetometer) sensor. It detects changes in the magnetic field and cannot replace a professional VLF/PI metal detector. Readings are affected by speakers, magnetic cases, other electronics and vehicles, and non-magnetic metals such as stainless steel and aluminum may respond weakly or not at all. Sensor quality varies between phone models.
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