Physics Toolbox Magnetometer

Physics Toolbox Magnetometer

Real-Time Field Strength Meter

6 ratings
3 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • June 23, 2015
  • March 1, 2026

Features

Physics Toolbox Magnetometer screenshot #1 for iPhone
Physics Toolbox Magnetometer screenshot #2 for iPhone
Physics Toolbox Magnetometer screenshot #3 for iPhone
iphone
ipad
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About

This app transforms your iPhone into a precise scientific instrument for measuring, visualizing, and recording magnetic fields. Explore magnetic field vectors, magnitudes, and compass headings with real-time charts and digital readouts. Ideal for educational experiments, lab work, or curious exploration.

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
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What's New in Physics Toolbox Magnetometer

2026.02.28

March 1, 2026

Added support for UI light theme

1

In-App Purchases

$2.99

Pro Upgrade

Custom sample rates and data filters

User reviews

So cool!!

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

Data Recording ??

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.
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Best free magnetometer

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.

Developer apps

FAQ

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.