# International Steam Tables vs Physics Toolbox Sensor Suite

The clearest difference is price: Physics Toolbox Sensor Suite at Free against International Steam Tables's $2.99. Physics Toolbox Sensor Suite also leads on rating (4.7 vs 3.9) and update cadence (weekly vs every 68 months). International Steam Tables's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 16.0). On ads and device support there is nothing between them.

Physics Toolbox Sensor Suite is free to download; International Steam Tables costs $2.99 up front. Physics Toolbox Sensor Suite sells 1 one-off in-app purchase. International Steam Tables asks for nothing beyond the download.

Physics Toolbox Sensor Suite holds the better App Store score, 4.7 against 3.9. That said, the two scores are not equally well evidenced: Physics Toolbox Sensor Suite has 1.8K ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 71% of International Steam Tables's written reviews are positive against 81% of Physics Toolbox Sensor Suite's.

International Steam Tables ships an update every 68 months, Physics Toolbox Sensor Suite weekly. Both last shipped on November 1, 2026.

## The numbers

| Metric | International Steam Tables | Physics Toolbox Sensor Suite |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.9 (8 ratings)](https://appshunter.io/ios/app/international-steam-tables/id502937992/reviews) | **[4.7 (1.8K ratings)](https://appshunter.io/ios/app/physics-toolbox-sensor-suite/id1128914250/reviews)** |
| Number of ratings | 8 | **1.8K** |
| Positive reviews | 71.4% of reviews | **80.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 68 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 10 MB | 79 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hans-Joachim Kretzschmar](https://appshunter.io/developer/502937995) | [Chrystian Vieyra](https://appshunter.io/developer/998187453) |

## What reviewers say

### International Steam Tables

[App page](https://appshunter.io/ios/app/international-steam-tables/id502937992)

This application calculates thermodynamic properties of water and steam based on the IAPWS-IF97 formulation. It allows users to input various combinations of variables and automatically computes a wide range of properties, including transport properties and derivatives. Designed for students and engineers, it offers a comprehensive tool for thermodynamic calculations.

**Highlights:** Calculates thermodynamic properties of water and steam, Based on IAPWS-IF97 formulation, Supports various input variable combinations, Automatically computes results, Includes transport properties and derivatives, Designed for students and engineers

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is International Steam Tables free?

International Steam Tables costs $2.99, with no in-app purchases.

### Is Physics Toolbox Sensor Suite free?

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

### Which has better reviews, International Steam Tables or Physics Toolbox Sensor Suite?

Physics Toolbox Sensor Suite is rated higher. International Steam Tables averages 3.9 out of 5 from 8 ratings, while Physics Toolbox Sensor Suite averages 4.7 from 1.8K ratings.

### Do International Steam Tables or Physics Toolbox Sensor Suite have ads?

Neither International Steam Tables nor Physics Toolbox Sensor Suite shows ads.

### Which is updated more often, International Steam Tables or Physics Toolbox Sensor Suite?

International Steam Tables ships an update every 68 months, and Physics Toolbox Sensor Suite weekly. Most recently, International Steam Tables was updated on November 1, 2026 and Physics Toolbox Sensor Suite on November 1, 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.*