# Learn Chemical Engineering vs Chemicastle

The clearest difference is price: Chemicastle at Free against Learn Chemical Engineering's $3.99. Chemicastle also leads on update cadence (every 4 months vs every 17 months). Learn Chemical Engineering's advantage is iOS requirement (13.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Chemicastle is free to download; Learn Chemical Engineering costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Learn Chemical Engineering ships an update every 17 months, Chemicastle every 4 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Learn Chemical Engineering | Chemicastle |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/learn-chemical-engineering/id6444441890/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 4 months** |
| Monetization | Paid | — |
| Size | 28 MB | 301 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 9+ |
| Developer | [Saqib Masood](https://appshunter.io/developer/1555852546) | [Haute ecole pedagogique HEP-BEJUNE](https://appshunter.io/developer/1835648343) |

## What reviewers say

### Learn Chemical Engineering

[App page](https://appshunter.io/ios/app/learn-chemical-engineering/id6444441890)

This app provides a comprehensive guide to chemical engineering principles, covering essential concepts, calculations, and diagrams. It aims to help students and aspiring engineers understand the field's fundamentals for a successful career.

**Highlights:** Chemical engineering principles explained, Understanding of physics, chemistry, and math applications, Information on safety procedures and environmental regulations, Details on industrial demand and career opportunities, Explanation of block flow diagrams and unit balances, Coverage of mass transfer, heat transfer, and thermodynamics

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

**In-app purchases:** none


### Chemicastle

[App page](https://appshunter.io/ios/app/chemicastle/id6753705536)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Learn Chemical Engineering free?

Learn Chemical Engineering costs $3.99, with no in-app purchases.

### Is Chemicastle free?

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

### Do Learn Chemical Engineering or Chemicastle have ads?

Neither Learn Chemical Engineering nor Chemicastle shows ads.

### Which is updated more often, Learn Chemical Engineering or Chemicastle?

Learn Chemical Engineering ships an update every 17 months, and Chemicastle every 4 months. Most recently, Learn Chemical Engineering was updated on October 24, 2026 and Chemicastle on October 10, 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.*