# Clausius vs PySymbolic Lab

The clearest difference is price: Clausius at Free against PySymbolic Lab's $6.99. PySymbolic Lab's advantage is update cadence (every 3 months vs every 8 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Clausius is free to download; PySymbolic Lab costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Clausius ships an update every 8 months, PySymbolic Lab every 3 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Clausius | PySymbolic Lab |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/clausius/id1023474133/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 3 MB | 68 MB |
| Requires iOS | **15.4** | 16.4 |
| Devices | iPad, Mac | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Smitesh Bakrania](https://appshunter.io/developer/1609864392) | [SimTeCon GmbH](https://appshunter.io/developer/1761797043) |

## What reviewers say

### Clausius

[App page](https://appshunter.io/ios/app/clausius/id1023474133)

Visualize thermodynamic properties of water with an intuitive, interactive chart. Ideal for engineering students, it allows users to glide their finger across T-s, P-h, and P-v diagrams to instantly access data. This tool simplifies complex thermodynamic concepts for educational purposes.

**Highlights:** Interactive thermodynamic property charts, Visual reference for water properties, T-s, P-h, and P-v diagrams, Intuitive finger-glide interface, Suitable for engineering courses

**In-app purchases:** none


### PySymbolic Lab

[App page](https://appshunter.io/ios/app/pysymbolic-lab/id6737474596)

**In-app purchases:** none


## Frequently asked questions

### Is Clausius free?

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

### Is PySymbolic Lab free?

PySymbolic Lab costs $6.99, with no in-app purchases.

### Do Clausius or PySymbolic Lab have ads?

Neither Clausius nor PySymbolic Lab shows ads.

### Which is updated more often, Clausius or PySymbolic Lab?

Clausius ships an update every 8 months, and PySymbolic Lab every 3 months. Most recently, Clausius was updated on November 1, 2026 and PySymbolic Lab on October 30, 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.*