# Hep B vs CloudLabs Ethylene Synthesis

The clearest difference is iOS requirement: CloudLabs Ethylene Synthesis at 9.0 against Hep B's 11.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Hep B ships an update every 16 months, CloudLabs Ethylene Synthesis every 28 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Hep B | CloudLabs Ethylene Synthesis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/hep-b-ware/id1478014853/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 16 months** | Every 28 months |
| Monetization | Free | — |
| Size | 332 MB | 83 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Drexel University](https://appshunter.io/developer/410950254) | [Jiovany Orozco](https://appshunter.io/developer/1114670847) |

## What reviewers say

### Hep B

[App page](https://appshunter.io/ios/app/hep-b-ware/id1478014853)

Explore the world of infectious diseases through engaging gameplay. This educational game allows players to embody a virus, navigate the bloodstream, and infect liver cells while learning key scientific concepts through interactive levels and quizzes.

**Highlights:** Simulate hepatitis B virus infection, Navigate bloodstream to infect liver cells, 7 educational game levels, Interactive pop-quizzes, Learn scientific terms, Understand viral life cycle

**In-app purchases:** none


### CloudLabs Ethylene Synthesis

[App page](https://appshunter.io/ios/app/cloudlabs-ethylene-synthesis/id1596480143)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hep B free?

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

### Is CloudLabs Ethylene Synthesis free?

CloudLabs Ethylene Synthesis is free to download, with no in-app purchases.

### Do Hep B or CloudLabs Ethylene Synthesis have ads?

Neither Hep B nor CloudLabs Ethylene Synthesis shows ads.

### Which is updated more often, Hep B or CloudLabs Ethylene Synthesis?

Hep B ships an update every 16 months, and CloudLabs Ethylene Synthesis every 28 months. Most recently, Hep B was updated on October 13, 2026 and CloudLabs Ethylene Synthesis on October 11, 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.*