Metal Detector

• It detects magnetic field i.e. presence of a ferrous metallic objects (iron, steel, gold and etc).
• It uses magnetic sensor (magnetometer) of phone to detect magnetic field.
• You can choose to turn on / off the sound.

Note:
• Sensor readings are affected by the nearby electronic equipment (TVs, PCs, etc.) due to electromagnetic waves.
• The accuracy depends upon the sensor size in your device.
• Readings are also affected by phone's magnetic cover.
• If app is sounding false alarm than calibrate the sensor as shown in the app.

Try this useful tool!