# International Steam Tables vs CNVRT

The clearest difference is rating: CNVRT at 4.5 against International Steam Tables's 3.9. CNVRT also leads on update cadence (every 2 weeks vs every 68 months). International Steam Tables's advantage is review sentiment (71% vs 50%) and price ($2.99 vs $4.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

International Steam Tables costs $2.99 and CNVRT $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CNVRT holds the better App Store score, 4.5 against 3.9. Both are backed by a comparable volume of ratings — 8 and 19 respectively. Written reviews complicate that: 71% of International Steam Tables's written reviews are positive against 50% of CNVRT'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, CNVRT every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | International Steam Tables | CNVRT |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | [3.9 (8 ratings)](https://appshunter.io/ios/app/international-steam-tables/id502937992/reviews) | **[4.5 (19 ratings)](https://appshunter.io/ios/app/cnvrt-si-unit-conversion-tool/id1607762263/reviews)** |
| Number of ratings | 8 | **19** |
| Positive reviews | **71.4% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 68 months | **Every 2 weeks** |
| Monetization | Paid | Paid |
| Size | 10 MB | 1 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) | [Pascal Andraos](https://appshunter.io/developer/1328885685) |

## 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


### CNVRT

[App page](https://appshunter.io/ios/app/cnvrt-si-unit-conversion-tool/id1607762263)

Instantly convert over 200 units across 20 measurement categories, from weight and length to temperature and data storage. This tool simplifies metric and Imperial conversions for STEM professionals and everyday users alike.

**Highlights:** Over 200 units supported, 20 measurement categories, Instant conversions, Metric and Imperial units, Optimized for Apple devices, STEM and everyday use

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is International Steam Tables free?

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

### Is CNVRT free?

CNVRT costs $4.99, with no in-app purchases.

### Which has better reviews, International Steam Tables or CNVRT?

CNVRT is rated higher. International Steam Tables averages 3.9 out of 5 from 8 ratings, while CNVRT averages 4.5 from 19 ratings.

### Do International Steam Tables or CNVRT have ads?

Neither International Steam Tables nor CNVRT shows ads.

### Which is updated more often, International Steam Tables or CNVRT?

International Steam Tables ships an update every 68 months, and CNVRT every 2 weeks. Most recently, International Steam Tables was updated on October 24, 2026 and CNVRT on October 24, 2026.

---

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