# Physics Toolbox Magnetometer vs Campus Labs® Event Check

The clearest difference is review sentiment: Physics Toolbox Magnetometer at 80% against Campus Labs® Event Check's 43%. Physics Toolbox Magnetometer also leads on rating (5.0 vs 4.8). Campus Labs® Event Check's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 13 months). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Physics Toolbox Magnetometer sells 1 one-off in-app purchase. Campus Labs® Event Check asks for nothing beyond the download.

Physics Toolbox Magnetometer holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Campus Labs® Event Check has 1.5K ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 80% of Physics Toolbox Magnetometer's written reviews are positive against 43% of Campus Labs® Event Check's.

Physics Toolbox Magnetometer ships an update every 13 months, Campus Labs® Event Check monthly. Both last shipped on November 6, 2026.

## The numbers

| Metric | Physics Toolbox Magnetometer | Campus Labs® Event Check |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/physics-toolbox-magnetometer/id1003749103/reviews)** | [4.8 (1.5K ratings)](https://appshunter.io/ios/app/campus-labs-event-check-in/id1221503400/reviews) |
| Number of ratings | 9 | **1.5K** |
| Positive reviews | **80.0% of reviews** | 42.9% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | Free | Free |
| Size | 17 MB | 31 MB |
| Requires iOS | 17.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chrystian Vieyra](https://appshunter.io/developer/998187453) | [Campus Labs, Inc.](https://appshunter.io/developer/320512904) |

## 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 |


### Campus Labs® Event Check

[App page](https://appshunter.io/ios/app/campus-labs-event-check-in/id1221503400)

This app allows campus event hosts to securely check students into events using their mobile devices. It acts as a companion to a web application, streamlining the event attendance process for organizers.

**Highlights:** Mobile event check-in, Secure student entry, Companion to web app, Event host tool

**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 Campus Labs® Event Check free?

Campus Labs® Event Check is free to download, with no in-app purchases.

### Which has better reviews, Physics Toolbox Magnetometer or Campus Labs® Event Check?

Physics Toolbox Magnetometer is rated higher. Physics Toolbox Magnetometer averages 5.0 out of 5 from 9 ratings, while Campus Labs® Event Check averages 4.8 from 1.5K ratings.

### Do Physics Toolbox Magnetometer or Campus Labs® Event Check have ads?

Neither Physics Toolbox Magnetometer nor Campus Labs® Event Check shows ads.

### Which is updated more often, Physics Toolbox Magnetometer or Campus Labs® Event Check?

Physics Toolbox Magnetometer ships an update every 13 months, and Campus Labs® Event Check monthly. Most recently, Physics Toolbox Magnetometer was updated on November 6, 2026 and Campus Labs® Event Check on November 6, 2026.

---

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