# Physics Toolbox Sensor Suite vs CSiUnits

The clearest difference is in-app purchases: CSiUnits at none against Physics Toolbox Sensor Suite's 1. CSiUnits also leads on iOS requirement (9.0 vs 16.0). Physics Toolbox Sensor Suite's advantage is review sentiment (81% vs 50%) and ratings volume (1.8K vs 4). On price, rating, ads and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.7 for Physics Toolbox Sensor Suite against 4.8 for CSiUnits. That said, the two scores are not equally well evidenced: Physics Toolbox Sensor Suite has 1.8K ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 81% of Physics Toolbox Sensor Suite's written reviews are positive against 50% of CSiUnits's.

Physics Toolbox Sensor Suite ships an update weekly, CSiUnits monthly. The most recent releases landed on October 12, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Physics Toolbox Sensor Suite | CSiUnits |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.8K ratings)](https://appshunter.io/ios/app/physics-toolbox-sensor-suite/id1128914250/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/csiunits/id1344138128/reviews)** |
| Number of ratings | **1.8K** | 4 |
| Positive reviews | **80.6% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 78 MB | 13 MB |
| Requires iOS | 16.0 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chrystian Vieyra](https://appshunter.io/developer/998187453) | [Computers and Structures, Inc.](https://appshunter.io/developer/1119970032) |

## What reviewers say

### Physics Toolbox Sensor Suite

[App page](https://appshunter.io/ios/app/physics-toolbox-sensor-suite/id1128914250)

This app turns your smartphone into a scientific instrument suite, enabling measurement, recording, analysis, and export of real-time sensor data. It offers tools for kinematics, acoustics, light, magnetism, and more, suitable for students, educators, researchers, and hobbyists.

**Highlights:** Real-time sensor data measurement, Data recording and analysis, Data export functionality, Kinematics tools (accelerometer, gyroscope), Acoustics tools (sound meter, oscilloscope), Magnetism tools (compass, magnetometer), AR visualization for magnetic fields and measurements

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro | $5.99 | one-time |


### CSiUnits

[App page](https://appshunter.io/ios/app/csiunits/id1344138128)

This application provides a comprehensive tool for converting units across various scientific disciplines and everyday needs. It offers over 70 conversion options, catering to professionals, students, and anyone requiring precise unit transformations.

**Highlights:** Multiple one-time conversion lists, Conversions for lifestyle and science, Over 70 conversion options, Numeric value input, Converted values to all possible units

**In-app purchases:** none


## Frequently asked questions

### Is Physics Toolbox Sensor Suite free?

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

### Is CSiUnits free?

CSiUnits is free to download, with no in-app purchases.

### Which has better reviews, Physics Toolbox Sensor Suite or CSiUnits?

CSiUnits is rated higher. Physics Toolbox Sensor Suite averages 4.7 out of 5 from 1.8K ratings, while CSiUnits averages 4.8 from 4 ratings.

### Do Physics Toolbox Sensor Suite or CSiUnits have ads?

Neither Physics Toolbox Sensor Suite nor CSiUnits shows ads.

### Which is updated more often, Physics Toolbox Sensor Suite or CSiUnits?

Physics Toolbox Sensor Suite ships an update weekly, and CSiUnits monthly. Most recently, Physics Toolbox Sensor Suite was updated on October 12, 2026 and CSiUnits on September 17, 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.*