Turn your phone into a practical Metal Detector and magnetic field scanner using the built-in magnetometer sensor. Metal Detector helps you find nearby ferrous metal, check magnetic field changes, locate possible metal studs, and monitor signal strength with clear live readings.
Whether you are looking for screws behind a wall, checking for steel objects, finding lost keys in grass, testing magnetic fields, or experimenting with your phone’s sensors, Metal Detector gives you an easy way to see magnetic changes in real time.
KEY FEATURES
• Real-time metal detection
Watch the magnetic field change instantly as your phone moves closer to iron, steel, screws, nails, tools, keys, and other magnetic metal objects.
• Live magnetic field readings
View readings in microteslas (µT) with a large display. The app also shows relative values, baseline readings, peak measurements, and signal strength.
• Standard and Stud modes
Use Standard mode for everyday metal detection or switch to Stud mode when checking walls and surfaces for possible metal studs, screws, or nails.
• Visual signal meter
A responsive gauge and radar-style indicator make it easy to understand whether the magnetic signal is weak or strong.
• Sound and vibration alerts
Enable audio and vibration feedback while scanning. Alerts become more noticeable as the magnetic signal increases, so you can scan without constantly watching the screen.
• Adjustable sensitivity
Fine-tune the detector threshold to match your environment and reduce unwanted alerts around different objects.
• Live signal graph
Track changes in magnetic strength over time and see spikes as you move the phone around an object.
• Peak value tracking
See the strongest magnetic reading during your scan to identify where the signal is highest.
• Save scan history
Review previous scans with peak values, duration, mode, and sample count for easy comparison.
• Quick calibration
Use the built-in calibration guide and move your phone in a figure-8 pattern to help improve magnetometer accuracy when needed.
• Light and dark themes
Use the detector in a clean light interface or a comfortable dark interface.
• Sensor controls
Choose normal or high sensor rate, select measurement units, lock screen rotation, and customize sound and vibration behavior.
USE METAL DETECTOR FOR
• Finding iron or steel objects nearby
• Locating screws and nails behind thin wall coverings
• Checking for possible metal studs
• Finding keys, tools, bolts, and other ferrous objects
• Monitoring magnetic field strength
• Magnet and sensor experiments
• Comparing magnetic readings around household objects
HOW IT WORKS
Most modern phones include a magnetometer, the same type of sensor used by compass apps. Metal Detector reads this sensor and displays changes in the surrounding magnetic field. When a magnetic or ferrous metal object comes close to the phone, the reading may increase.
For best results, move the phone slowly around the area you want to scan and watch the relative reading, gauge, graph, and peak value. The location of the magnetometer varies between phones, so try different parts of your device near the object.
IMPORTANT LIMITATIONS
This app is not a professional industrial metal detector. Detection performance depends on your phone’s magnetometer, device hardware, object size, distance, and surrounding magnetic interference.
A phone magnetometer mainly responds to magnetic materials such as iron and steel. Non-magnetic metals such as pure gold, silver, copper, brass, and aluminum may not be detected. The app does not use the camera to “find gold” and does not claim to detect every type of metal.
If your device does not include a magnetometer sensor, metal detection features may not work.
Download Metal Detector and use your phone’s magnetic sensor to scan, measure, and explore nearby magnetic fields with a simple, responsive interface.
Recent changes:
Latest release of Metal Detector!
• Detect nearby metal using your phone’s magnetic sensor
• Live magnetic field readings in µT
• Standard & Stud detection modes
• Adjustable sensitivity and peak tracking
• Sound and vibration alerts
• Real-time signal strength graph
• Save and review scan history
• Quick magnetometer calibration
• Light & dark themes
Built for fast, simple and accurate magnetic field detection.
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