Magnetic Field Meter turns your smartphone into a professional EMF detector, metal detector, RF signal analyzer, stud finder, ghost hunter, and digital compass — all in one app. It uses your device\'s built-in magnetometer to deliver accurate, real-time measurements with no extra hardware.
■ How Does It Detect Metal?
Your phone\'s magnetometer measures the surrounding magnetic field in microtesla (μT). Ferrous metals — iron, steel, nickel, cobalt — distort the Earth\'s natural field (25–65 μT), and this app detects those distortions with vibration, sound, and color-coded visual feedback.
Note: Non-ferrous metals (gold, silver, copper, aluminum) do not affect magnetic fields and require professional electromagnetic induction equipment to detect.
■ Adaptive AI Detection Engine
Most EMF apps use a fixed threshold that causes false alarms. Magnetic Field Meter\'s Guarded EMA algorithm continuously learns your environment\'s magnetic baseline and adjusts automatically — accurate indoors, outdoors, and near electronics. The sensitivity slider (−30 to +30) lets you fine-tune from strict to highly sensitive.
■ Real-Time Measurement & Visualization
- Live readings in μT, mG (milligauss), and A/m
- Circular gauge with 13-level color gradient (green to red)
- Scrolling line chart tracking up to 1,000 data points
- Delta (Δ) display showing change from calibrated baseline
- Min / Max / Threshold statistics updated continuously
■ Detection Alerts
- Haptic vibration on magnetic anomaly detection
- Audible alarm that scales with field intensity
- Color-coded status indicator across the UI
- Status bar notification with 7 one-tap shortcuts
■ RF Signal Meter
Monitor Wi-Fi and cellular signal strength in real time. View connection details — SSID, RSSI, frequency, link speed for Wi-Fi; operator, signal dBm, network type for cellular. A dual-line live chart plots both signals. Scan nearby Wi-Fi networks with signal bars.
■ Stud Finder
Find metal studs, pipes, and rebar behind walls using the magnetometer. A 3-step on-screen guide walks you through: hold your phone flat, tap Start, and slide slowly. Color-coded sensitivity feedback shows detection strength in real time.
■ Ghost Hunter Mode
Fun paranormal EMF detector for parties with a matrix-style dark UI, 5-level activity bars, EVP log driven by real sensor data, and DTMF audio tones that intensify with EMF readings. For entertainment only.
■ EMF Recorder
Log magnetic field data with timestamps and GPS coordinates. Browse history and export as CSV for analysis.
■ Digital Compass
Aviation-style 360° heading display with N/S/E/W directions and smooth sensor-driven rotation.
■ Who Uses This App?
- Home inspectors — locate iron pipes, rebar, steel studs in walls
- DIY enthusiasts — find studs before drilling, detect buried metal
- Electricians & engineers — measure EMF near power lines
- Network technicians — diagnose Wi-Fi and cellular coverage
- Students & educators — hands-on magnetism experiments
- Ghost hunting fans — entertain friends with paranormal mode
■ What Can & Cannot Be Detected
✓ Iron, steel, nickel, cobalt, magnets, electromagnetic sources, Wi-Fi/cellular signals
✗ Gold, silver, copper, aluminum, brass, lead (non-magnetic)
Dark & Light theme, 50+ languages, screen capture, baseline calibration, lightweight with no background drain.