Magneo: EMF Detector & Meter

Magneo: EMF Detector & Meter turns your Android phone into a precise magnetometer and EMF toolkit, useful for locating hidden wires before drilling, tracking magnetic interference in older homes, or demonstrating magnetic fields in the classroom. The app reads your device's magnetometer and reports values in microtesla—the same unit professionals use—while offering live graphs, axis vectors and spike logging so you can diagnose installations or record anomalies with confidence. If you want an accurate, privacy-focused utility without in-app ads and with detailed sensor information, Magneo is aimed at DIYers, electricians, teachers and curious users.

Key Features

⭐ Meter Mode (Free): live numerical readout in microtesla, real-time line graph with adjustable history, min/max/average stats, X/Y/Z axis vectors, radial gauge and calibration status.

⭐ Wire Finder Mode (Premium): visual intensity indicator for finding live wires, rebar or studs, continuous audio feedback with rising pitch, haptic alerts, adjustable sensitivity and one-tap baseline calibration.

⭐ Ghost Hunter Mode (Premium): high-resolution LED bar meter, automatic spike detection with severity ratings, timestamped evidence log with trace graphs, custom alarm sounds and adaptive sampling for transient events.

⭐ Education Mode (Free): nine in-depth topics on magnetism and sensors, four step-by-step experiments, FAQ and live data showing your sensor vendor, model, range, resolution and quality tier.

⭐ Transparent hardware details: Magneo: EMF Detector & Meter displays your magnetometer's resolution, range and quality tier so you understand the limits of your device.

⭐ Battery- and privacy-conscious design: adaptive sampling to conserve battery, no ads, no analytics and all measurements stay on your device.

Advantages

✅ Magneo: EMF Detector & Meter reports readings in professional units (microtesla) and provides detailed visualizations suitable for technical checks or demonstrations.

✅ Clear sensor transparency helps you assess whether your phone's hardware is suitable for a given task and compare accuracy across devices.

✅ Premium functionality unlocks with a single one-time purchase and each premium mode offers a 60-second free trial before you decide.

✅ Supports multiple languages and is optimized to minimize battery drain while keeping sampling adaptive to the situation.

Disadvantages

❎ Requires a device with a built-in magnetometer; if your phone lacks that sensor the app will not be available.

❎ Advanced Wire Finder and Ghost Hunter features require a paid one-time unlock to access beyond the trial period.

❎ Measurement accuracy depends on your phone's magnetometer quality and environmental factors, which the app reports but cannot change.