# Amarin eBooks vs Skybook E

The clearest difference is in-app purchases: Skybook E at none against Amarin eBooks's 12. Amarin eBooks's advantage is update cadence (every 10 months vs every 30 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Amarin eBooks sells 12 one-off in-app purchases. Skybook E asks for nothing beyond the download.

Amarin eBooks ships an update every 10 months, Skybook E every 30 months. The most recent releases landed on October 11, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Amarin eBooks | Skybook E |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 30 months |
| Monetization | Free with in-app purchases | — |
| Size | 103 MB | 12 MB |
| Requires iOS | **11.0** | 12.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [MEB Corporation Public Company Limited](https://appshunter.io/developer/436964329) | [STAQ Technologies Co., Ltd.](https://appshunter.io/developer/506659247) |

## What reviewers say

### Amarin eBooks

[App page](https://appshunter.io/ios/app/amarin-ebooks/id1443447767)

Access a vast library of novels, including Chinese, Thai, translated, and erotic genres, alongside business, psychology, and lifestyle books. Explore diverse collections from various publishers, offering a wide range of reading material.

**Highlights:** Extensive novel collection, Business and self-help books, Lifestyle and health titles, Diverse publisher content, Online reading platform

**Features:** Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| หนังสือราคา 3.99 USD | $3.99 | one-time |
| หนังสือราคา 5.99 USD | $5.99 | one-time |
| หนังสือราคา 6.99 USD | $6.99 | one-time |
| หนังสือราคา 59.99 USD | $59.99 | one-time |
| หนังสือราคา 64.99 USD | $64.99 | one-time |
| หนังสือราคา 69.99 USD | $69.99 | one-time |
| หนังสือราคา 74.99 USD | $74.99 | one-time |
| หนังสือราคา 79.99 USD | $79.99 | one-time |
| หนังสือราคา 84.99 USD | $84.99 | one-time |
| หนังสือราคา 89.99 USD | $89.99 | one-time |
| หนังสือราคา 94.99 USD | $94.99 | one-time |
| หนังสือราคา 99.99 USD | $99.99 | one-time |


### Skybook E

[App page](https://appshunter.io/ios/app/skybook-e-library/id1599065699)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Amarin eBooks free?

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

### Is Skybook E free?

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

### Do Amarin eBooks or Skybook E have ads?

Neither Amarin eBooks nor Skybook E shows ads.

### Which is updated more often, Amarin eBooks or Skybook E?

Amarin eBooks ships an update every 10 months, and Skybook E every 30 months. Most recently, Amarin eBooks was updated on October 11, 2026 and Skybook E on October 15, 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.*