# Magnetometer

> Colourable analogue and digital Magnetometer.

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

## Overview

- **ID:** `uk.co.spacerocket.magnetometer`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** SpaceRocket
- **Category:** TOOLS
- **Downloads:** 103,657
- **Rating:** 3.89 / 5 (399 ratings)
- **Version:** 1.1
- **Last updated:** 2017-02-10
- **First published:** 2016-05-26
- **Publisher country:** GB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=uk.co.spacerocket.magnetometer)
- **Website:** [https://sites.google.com/view/spacerocketapps](https://sites.google.com/view/spacerocketapps)
- **Privacy policy:** [https://sites.google.com/view/spacerocketapps/legal\_documents\_for\_apps](https://sites.google.com/view/spacerocketapps/legal_documents_for_apps)

## Description

Magnetometer is an intuitive Chrome extension that utilizes your device's built-in geomagnetic field sensor to detect electromagnetic fields (EMF) in the environment. It measures magnetic strengths along the X, Y, and Z axes, providing both analogue needle and digital readouts in micro-Tesla units (µT). Its color-customizable interface allows users to adjust the background, dial, and numbers to any hue, saturation, or darkness for a personalized experience.

Designed for home, workshop, or office use, Magnetometer helps identify magnetic sources such as electrical cables, interference, or strong fields potentially impacting health. Features include audio frequency feedback representing field strengths, a hold function to freeze readings, and a zero function to offset background magnetic fields like Earth's. Comprehensive guides assist users with calibration and understanding typical readings to ensure precision. Developed by a dedicated indie studio, Magnetometer prioritizes user safety and privacy without requesting dangerous permissions, offering reliable EMF detection in a user-friendly package.

## Rankings

- #217,582 — Overall

## Review summary

Users find the Magnetometer app very useful for measuring magnetic fields, especially for physics enthusiasts. It delivers accurate results and includes helpful features like zero setting to improve measurement precision. However, calibration issues and device sensor variability can impact accuracy. Users suggest adding unit conversion options to enhance usability. Overall, it is regarded as an effective and cost-saving tool compared to expensive instruments.

### Pros

- Useful for physics enthusiasts and those interested in magnetic field measurement.
- Provides good and accurate results, confirmed by testing on known magnets like hard drive magnets.
- Features such as zero setting help eliminate Earth's magnetic field influence for more precise readings.
- Highly praised for being effective and working well across various devices.
- Considered a cost-effective alternative to expensive gauss probes.

### Cons

- Difficulty in calibration mentioned, with at least one user unable to calibrate the app.
- Sensor location differences between devices cause variance in readings unless orientation is maintained consistently.
- Lack of option to switch units from microtesla (uT) to gauss, which would be beneficial for some users.

## Similar extensions and apps

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- [EMF Detector: Magnetometer](https://chrome-stats.com/d/com.ToolsZone.AcLiveWireFinder) — 121,511 users, 4.09 / 5
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- [Magnetic Analyzer](https://chrome-stats.com/d/pl.epomoce.magnetometr) — 489 users
- [Magnetic Field Visualizer](https://chrome-stats.com/d/com.atifs.magenticfield.science) — 810 users

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