# Magnetometer

> \*\*\*FREE\*\*\*NO ADS\*\*\*

Canonical page: [https://chrome-stats.com/d/com.appdevgenie.magnetometer](https://chrome-stats.com/d/com.appdevgenie.magnetometer)

## Overview

- **ID:** `com.appdevgenie.magnetometer`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** AppDevGenie
- **Category:** TOOLS
- **Downloads:** 444,135
- **Rating:** 4.50 / 5 (1,372 ratings)
- **Version:** 2.3
- **Last updated:** 2025-11-23
- **First published:** 2020-10-14
- **Publisher country:** ZA
- **Size:** 8.11 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.appdevgenie.magnetometer)
- **Privacy policy:** [https://github.com/appdevgenie/magnetometer\_privacy\_policy/blob/main/README.md](https://github.com/appdevgenie/magnetometer_privacy_policy/blob/main/README.md)

## Description

**Magnetometer** is a free and ad-free Chrome extension that utilizes your device's magnetic field sensor to measure ambient magnetic fields along three axes (x, y, and z). Designed primarily for compatible Android devices, the extension displays readings in micro-Tesla (uT) and indicates device compatibility on startup.

Users can customize alert settings with audible alarms and vibrations triggered by high magnetic field detection, adjusting sensitivity through an intuitive swipe interface. The extension also offers calibration through simple gestures like shaking or waving the device in a figure-eight pattern to ensure accurate readings. Permissions include vibration control for alerts and wake lock to prevent the device from sleeping during use, delivering reliable and continuous magnetic field measurement.

## Rankings

- #106,227 — Overall

## Permissions and access

### Permissions

- `android.permission.VIBRATE`
- `com.appdevgenie.magnetometer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

The Magnetometer app is widely praised for being ad-free, free to use, reliable, and easy to use, with features like a built-in level, vibration feedback, and access to multiple phone sensors. Some reviews point out that the UI can be confusing without explanations and would benefit from clearer instructions. Overall, it provides useful magnetometer/compass functionality with strong usability and no ads.

### Pros

- No ads and free to use
- Reliable performance and does what it says
- Clean, simple UI
- Built-in level tool / second window
- Vibration alerts when a magnetic field is nearby and access to multiple sensors

### Cons

- Confusing GUI and lack of in-app instructions

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.appdevgenie.magnetometer)