# Chemical Engineering+ vs QuaLean

The clearest difference is update cadence: Chemical Engineering+ at every 2 months against QuaLean's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Chemical Engineering+ sells 6 in-app purchases, starting at $9.99 per month and QuaLean sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Chemical Engineering+ ships an update every 2 months, QuaLean every 5 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Chemical Engineering+ | QuaLean |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/chemical-engineering-plus/id6740001145/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 85 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) | [TagMango Inc](https://appshunter.io/developer/1611765353) |

## What reviewers say

### Chemical Engineering+

[App page](https://appshunter.io/ios/app/chemical-engineering-plus/id6740001145)

Test your knowledge of chemical engineering with a comprehensive quiz app. It offers thousands of questions across various topics, adaptive difficulty, and detailed explanations to enhance learning. Prepare for exams and boost your industry skills with this interactive tool.

**Highlights:** Extensive question bank, Topic-specific quizzes, Calculations & problem solving, Adaptive difficulty, Interactive learning with explanations, Offline play, Leaderboard competition

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.99 | per month |
| 6 Months | $19.99 | per 6 months |
| 1 Year | $29.99 | per year |
| 1500 | $0.99 | one-time |
| 3500 | $1.99 | one-time |
| 9000 | $3.99 | one-time |


### QuaLean

[App page](https://appshunter.io/ios/app/qualean/id6746635737)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Automotive Quality System | $119.99 | one-time |


## Frequently asked questions

### Is Chemical Engineering+ free?

Chemical Engineering+ is free to download, with in-app purchases available.

### Is QuaLean free?

QuaLean is free to download, with in-app purchases available.

### Do Chemical Engineering+ or QuaLean have ads?

Neither Chemical Engineering+ nor QuaLean shows ads.

### Which is updated more often, Chemical Engineering+ or QuaLean?

Chemical Engineering+ ships an update every 2 months, and QuaLean every 5 months. Most recently, Chemical Engineering+ was updated on October 23, 2026 and QuaLean on October 24, 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.*