# International Steam Tables vs Mechanical Engineering Toolkit

The clearest difference is price: Mechanical Engineering Toolkit at Free against International Steam Tables's $2.99. Mechanical Engineering Toolkit also leads on rating (4.8 vs 3.9) and update cadence (every 5 days vs every 68 months). International Steam Tables's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Mechanical Engineering Toolkit is free to download; International Steam Tables costs $2.99 up front. Mechanical Engineering Toolkit sells 1 one-off in-app purchase. International Steam Tables asks for nothing beyond the download.

Mechanical Engineering Toolkit holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Mechanical Engineering Toolkit has 64 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 71% of International Steam Tables's written reviews are positive against 57% of Mechanical Engineering Toolkit's, so the app with the better star average is not the one people write more warmly about.

International Steam Tables ships an update every 68 months, Mechanical Engineering Toolkit every 5 days. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | International Steam Tables | Mechanical Engineering Toolkit |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.9 (8 ratings)](https://appshunter.io/ios/app/international-steam-tables/id502937992/reviews) | **[4.8 (64 ratings)](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443/reviews)** |
| Number of ratings | 8 | **64** |
| Positive reviews | **71.4% of reviews** | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 68 months | **Every 5 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#193** | — |
| Size | 10 MB | 48 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hans-Joachim Kretzschmar](https://appshunter.io/developer/502937995) | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) |

## What reviewers say

### International Steam Tables

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

**Currently charting:** #193 Top Paid · Utilities (US App Store)

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


### Mechanical Engineering Toolkit

[App page](https://appshunter.io/ios/app/mechanical-engineering-toolkit/id1601099443)

This professional engineering calculator provides instant results for students, researchers, and practicing engineers. It offers detailed calculation steps, formulas, diagrams, and unit conversions. Save inputs as projects and export results in various formats.

**Highlights:** Engineering equations and formulas, Step-by-step calculation breakdowns, SI and Imperial unit conversions, Save and export results (text, image, CSV, PDF), Offline functionality, Extensive library of engineering tools

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is International Steam Tables free?

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

### Is Mechanical Engineering Toolkit free?

Mechanical Engineering Toolkit is free to download, with in-app purchases available.

### Which has better reviews, International Steam Tables or Mechanical Engineering Toolkit?

Mechanical Engineering Toolkit is rated higher. International Steam Tables averages 3.9 out of 5 from 8 ratings, while Mechanical Engineering Toolkit averages 4.8 from 64 ratings.

### Do International Steam Tables or Mechanical Engineering Toolkit have ads?

Mechanical Engineering Toolkit shows ads; International Steam Tables does not.

### Which is updated more often, International Steam Tables or Mechanical Engineering Toolkit?

International Steam Tables ships an update every 68 months, and Mechanical Engineering Toolkit every 5 days. Most recently, International Steam Tables was updated on November 6, 2026 and Mechanical Engineering Toolkit on November 7, 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.*