Comparison

Physics Toolbox Magnetometer vs Lerny

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Physics Toolbox Magnetometer

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.

Highlights
  • 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
Features
Read full description

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.

About

Lerny

Features
Read full description

Lerny is a smart learning platform designed to help students learn efficiently through interactive courses, structured content, and modern learning tools. With Lerny, you can: • Access high-quality educational content • Track your learning progress • Learn anytime, anywhere • Enjoy a simple and user-friendly experience Lerny makes learning smarter and more accessible.

Screenshots

Physics Toolbox Magnetometer4 screens
Lerny4 screens

Verdict

The call

The clearest difference is in-app purchases: Lerny at none against Physics Toolbox Magnetometer's 1. Lerny also leads on iOS requirement (13.0 vs 17.1). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Physics Toolbox Magnetometer sells 1 one-off in-app purchase. Lerny asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Physics Toolbox Magnetometer versus Lerny: the parameters behind the verdict, then further details
ParameterPhysics Toolbox MagnetometerLerny
PriceFreeFree
Rating5.0 (7 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 13 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.113.0 — better
Further details — not scored
Size17 MB34 MB
Age rating4+4+
DeveloperChrystian VieyraAmr Kosba

In-app purchases

1 purchases

Physics Toolbox Magnetometer

One-time1
  • Pro Upgrade$2.99
None

Lerny

No in-app purchases

Questions

Is Physics Toolbox Magnetometer free?
Physics Toolbox Magnetometer is free to download, with in-app purchases available.
Is Lerny free?
Lerny is free to download, with no in-app purchases.
Do Physics Toolbox Magnetometer or Lerny have ads?
Neither Physics Toolbox Magnetometer nor Lerny shows ads.

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