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 1000 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.