Metal Detector turns your Android phone into a real magnetic field detector. Using your device's built-in magnetometer, it detects iron and steel objects nearby — keys, nails, screws, pipes, and more.
HOW IT WORKS
The app measures the Earth's magnetic field and detects disturbances caused by ferrous metal objects. A live gauge shows signal strength in real time, changing from green (normal) to orange (weak signal) to red (metal detected).
KEY FEATURES
• Real-time magnetic field measurement (ΔµT)
• Animated gauge with color-coded detection levels
• Auto-calibration plus a Recalibrate button
• Peak value tracking — see the strongest signal
• 3-tier sound alert that beeps faster as you get closer
• Works offline — no internet required
• Clean, premium dark interface with 8 languages
USE CASES
• Find dropped keys, screws, and nails
• Locate metal pipes and studs behind walls
• Check whether an object contains iron
• Educational science demonstrations
• DIY and home improvement projects
IMPORTANT NOTES
• Only detects ferrous metals (iron, steel). Does NOT detect aluminum, copper, gold, or silver.
• Detection range is roughly 2–5 cm (1–2 inches).
• Move the phone slowly near the target for the best results.
PRIVACY FIRST
No data collection. No account required. Sensor data stays on your device.
Download Metal Detector and explore the invisible magnetic world around you!
Metal detector & EMF stud finder. Find iron, steel, nails. Offline. 8 languages.