# Physics Toolbox Magnetometer vs Photronium

The clearest difference is update cadence: Photronium at monthly against Physics Toolbox Magnetometer's every 13 months. Photronium also leads on review sentiment (100% vs 80%). Physics Toolbox Magnetometer's advantage is monetization model (free vs free with in-app purchases). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Physics Toolbox Magnetometer sells 1 one-off in-app purchase and Photronium sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Physics Toolbox Magnetometer against 5.0 for Photronium. Both are backed by a comparable volume of ratings — 7 and 8 respectively. Written reviews are what separate them: 80% of Physics Toolbox Magnetometer's written reviews are positive against 100% of Photronium's.

Physics Toolbox Magnetometer ships an update every 13 months, Photronium monthly. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Physics Toolbox Magnetometer | Photronium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/physics-toolbox-magnetometer/id1003749103/reviews) | [5.0 (8 ratings)](https://appshunter.io/ios/app/photronium-physics-equations/id1546383517/reviews) |
| Number of ratings | 7 | **8** |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 59 MB |
| Requires iOS | 17.1 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chrystian Vieyra](https://appshunter.io/developer/998187453) | [Hao Nguyen](https://appshunter.io/developer/1546383519) |

## What reviewers say

### Physics Toolbox Magnetometer

[App page](https://appshunter.io/ios/app/physics-toolbox-magnetometer/id1003749103)

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:** macOS Compatibility

**In-app purchases (1)**

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


### Photronium

[App page](https://appshunter.io/ios/app/photronium-physics-equations/id1546383517)

Access over 360 physics equations with clear explanations and powerful search tools. Test your knowledge with custom quizzes and learn offline anywhere, anytime. This educational reference is designed for learners of all levels.

**Highlights:** 360+ physics equations, Offline access, Intelligent Search, Symbol Search, Customizable quizzes, Bookmarking

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multicolored Bookmarks | $0.99 | one-time |


## Frequently asked questions

### Is Physics Toolbox Magnetometer free?

Physics Toolbox Magnetometer is free to download, with in-app purchases available.

### Is Photronium free?

Photronium is free to download, with in-app purchases available.

### Which has better reviews, Physics Toolbox Magnetometer or Photronium?

Physics Toolbox Magnetometer and Photronium are both rated 5.0 out of 5 on the App Store, from 7 and 8 ratings respectively.

### Do Physics Toolbox Magnetometer or Photronium have ads?

Neither Physics Toolbox Magnetometer nor Photronium shows ads.

### Which is updated more often, Physics Toolbox Magnetometer or Photronium?

Physics Toolbox Magnetometer ships an update every 13 months, and Photronium monthly. Most recently, Physics Toolbox Magnetometer was updated on October 19, 2026 and Photronium on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*