# Physics Toolbox Magnetometer vs BC STEM Opportunities

The clearest difference is in-app purchases: BC STEM Opportunities at none against Physics Toolbox Magnetometer's 1. BC STEM Opportunities also leads on update cadence (daily vs every 13 months) and iOS requirement (13.4 vs 17.1). On price, ads and device support there is nothing between them.

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

Physics Toolbox Magnetometer ships an update every 13 months, BC STEM Opportunities daily. The most recent releases landed on October 19, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Physics Toolbox Magnetometer | BC STEM Opportunities |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/physics-toolbox-magnetometer/id1003749103/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 13 months | **Daily** |
| Monetization | Free | — |
| Size | 17 MB | 22 MB |
| Requires iOS | 17.1 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chrystian Vieyra](https://appshunter.io/developer/998187453) | [Nonit Gupta](https://appshunter.io/developer/1740890700) |

## 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 |


### BC STEM Opportunities

[App page](https://appshunter.io/ios/app/bc-stem-opportunities/id6748590407)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Physics Toolbox Magnetometer free?

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

### Is BC STEM Opportunities free?

BC STEM Opportunities is free to download, with no in-app purchases.

### Do Physics Toolbox Magnetometer or BC STEM Opportunities have ads?

Neither Physics Toolbox Magnetometer nor BC STEM Opportunities shows ads.

### Which is updated more often, Physics Toolbox Magnetometer or BC STEM Opportunities?

Physics Toolbox Magnetometer ships an update every 13 months, and BC STEM Opportunities daily. Most recently, Physics Toolbox Magnetometer was updated on October 19, 2026 and BC STEM Opportunities on September 30, 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.*