# Physics Toolbox Magnetometer — Real-Time Field Strength Meter

> iPhone magnetometer for measuring, visualizing, and recording magnetic fields. (iPhone/iPad app by Chrystian Vieyra.)

- Source: https://appshunter.io/ios/app/physics-toolbox-magnetometer/id1003749103 (this page in markdown: same URL + `.md`)
- Developer: [Chrystian Vieyra](https://appshunter.io/developer/998187453)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 7 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.1 · 14 MB
- Languages: American English, Arabic, French (France), German (Germany), Hindi, Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China) and 1 more
- Released: 2015-06-23
- Data updated: 2026-08-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/physics-toolbox-magnetometer/id1003749103/reviews.md

## What is Physics Toolbox Magnetometer?

Measure, visualize, and record magnetic fields with precision — right from your iPhone.    
                                                                                             
Physics Toolbox Magnetometer displays the magnetic field vector in x, y, and z dimensions along with total magnitude in microteslas (µT) or gauss, giving you the data you need for serious lab work or casual exploration.

Three ways to view your data:
  - Chart — real-time graph with toggleable axes, adjustable line width, and fullscreen mode
  - Digital — large numeric readout for quick at-a-glance measurements
  - Compass — live heading with True North and Magnetic North display

Built for the lab and the field:
  - Record and export data as CSV for analysis in other software
  - Adjustable sample rate from 1 to 100 Hz
  - Signal filters to reduce noise
  - Detects permanent magnets, electromagnetic fields, and background geomagnetic field

 Classroom-ready experiments:
  The magnetometer is well-suited for determining the inverse-square law for a point-source magnet, measuring the magnetic field produced by a solenoid, or capturing the periodic field variations of audio speakers and magnetic plate stirrers.

Whether you are a physics student, teacher, engineer, or curious mind, Physics Toolbox Magnetometer turns your device into a capable scientific instrument.

## Key features

- Real-time magnetic field vector and magnitude display
- Chart, digital, and compass viewing modes
- Data recording and CSV export
- Adjustable sample rate (1-100 Hz)
- Signal filters for noise reduction
- Detection of permanent and electromagnetic fields

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Upgrade | $2.99 | one-time |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/physics-toolbox-magnetometer/id1003749103/reviews.md

### 5/5 — No ads! Works great!

*2026-07-14*

All the features I wanted in a magnetometer app. I tried another one but it had a lot of ads.

### 5/5 — So cool!!

*2026-02-14*

I love how the creator(s) are taking advantage of sensors that are already in the phone to make this huge variety of tools that work surprisingly well. Great job devs

### 4/5 — Data Recording ??

*2022-11-06*

This App appeared to work very well, until I tried recording the data … After stopping record, there was no option to save a file, and the App crashed.

I have repeated this exercise with the same result.

Note: __  I am using a 9.7” iPad Pro

The VERY good news, however, is that I have downloaded the ‘suite’ which works fine … Thank You for a great resource.

### 5/5 — Best free magnetometer

*2018-04-02*

I’ve tried dozens of apps and was even tempted to purchase some but this is exactly what I was looking for. I use this app to make sure my electric blanket is working because the cord sometimes disconnects. Holding my phone close to the sheets slows a clear indication it is working.

## Frequently asked questions about Physics Toolbox Magnetometer

### What can Physics Toolbox Magnetometer measure?

Physics Toolbox Magnetometer measures the magnetic field vector in x, y, and z dimensions, along with its total magnitude. It can detect permanent magnets, electromagnetic fields, and the background geomagnetic field.

### How can I view my magnetic field data with Physics Toolbox Magnetometer?

You can view your data in three ways: a real-time chart with adjustable axes, a large digital numeric readout, and a compass displaying both True North and Magnetic North.

### Can I export data from Physics Toolbox Magnetometer?

Yes, you can record and export your magnetic field data as a CSV file. This allows for further analysis in other software applications.

### What is the sample rate for Physics Toolbox Magnetometer?

The app offers an adjustable sample rate, allowing you to choose from 1 Hz up to 100 Hz. It also includes signal filters to help reduce noise in your measurements.

### Is Physics Toolbox Magnetometer suitable for classroom experiments?

Yes, the app is well-suited for classroom experiments. It can be used to demonstrate concepts like the inverse-square law for magnets, measure fields from solenoids, or capture field variations from audio speakers.

### What devices does Physics Toolbox Magnetometer support?

Physics Toolbox Magnetometer is available for iPhone and iPad devices. It requires iOS 11.0 or later.

### Does Physics Toolbox Magnetometer have ads?

No, Physics Toolbox Magnetometer does not contain advertisements. It is a free app with no ads to interrupt your measurements or experiments.

### How often is Physics Toolbox Magnetometer updated?

The app was last updated on March 1, 2026, with version 2026.02.28. This indicates a recent update, suggesting ongoing support and potential for future improvements.

## Version history (last 5 releases)

### 2026.02.28 — 2026-03-01

Added support for UI light theme

### 2026.02.26 — 2026-02-28

Added new data filter options

### 2025.02.21 — 2026-02-25

Added a compass mode

### 1.2 — 2018-09-11

New UI.
Added data recording option.
New digital readout visualization.
New sensor information page.

### 1.1 — 2017-03-02

Bug fixes.
New icon.
New UI.

## Apps similar to Physics Toolbox Magnetometer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [DoodleConnect](https://appshunter.io/ios/app/doodleconnect/id1176073180) | 4.7 (55) | Free | Education |
| [Geostationary Orbit 3D Lab](https://appshunter.io/ios/app/geostationary-orbit-3d-lab/id1190211000) | — | Free | Education |
| [Solar System Simulator](https://appshunter.io/ios/app/solar-system-simulator/id1190193240) | 2.0 (3) | Free | Education |
| [Birdathon](https://appshunter.io/ios/app/birdathon/id1211977440) | 4.7 (15) | Free | Education |
| [Campus Labs® Event Check-in](https://appshunter.io/ios/app/campus-labs-event-check-in/id1221503400) | 4.8 (1,381) | Free | Education |
| [Uncertainty Calculator](https://appshunter.io/ios/app/uncertainty-calculator/id1170905440) | 5.0 (1) | $3.99 | Education |

## More apps by Chrystian Vieyra

- [Physics Toolbox Tone Generator](https://appshunter.io/ios/app/physics-toolbox-tone-generator/id998187454)
- [Physics Toolbox Accelerometer](https://appshunter.io/ios/app/physics-toolbox-accelerometer/id1008160133)
- [Physics Toolbox Sensor Suite](https://appshunter.io/ios/app/physics-toolbox-sensor-suite/id1128914250)
- [Physics Toolbox Color Gen](https://appshunter.io/ios/app/physics-toolbox-color-gen/id1372521401)
- [Magna-AR](https://appshunter.io/ios/app/magna-ar/id1452533895)

All apps by Chrystian Vieyra: https://appshunter.io/developer/998187453

## Related topics

[physics toolbox magnetometer](https://appshunter.io/ios/topics/physics-toolbox-magnetometer) · [magnetometer](https://appshunter.io/ios/topics/magnetometer) · [physics toolbox suite](https://appshunter.io/ios/topics/physics-toolbox-suite) · [physics tool box](https://appshunter.io/ios/topics/physics-tool-box) · [magnetic field](https://appshunter.io/ios/topics/magnetic-field) · [magnetometer free](https://appshunter.io/ios/topics/magnetometer-free) · [free raw magnetometer](https://appshunter.io/ios/topics/free-raw-magnetometer) · [magnetic](https://appshunter.io/ios/topics/magnetic) · [magnetic sensor](https://appshunter.io/ios/topics/magnetic-sensor)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-01.*