# Chapter vs Calypso Books

The clearest difference is in-app purchases: Calypso Books at none against Chapter's 3. Calypso Books also leads on iOS requirement (13.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Chapter sells 3 in-app purchases, starting at $1.99 per month. Calypso Books asks for nothing beyond the download.

## The numbers

| Metric | Chapter | Calypso Books |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 37 MB | 25 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Sergiu Prodan](https://appshunter.io/developer/1531741524) | [Georgiana Stefanescu](https://appshunter.io/developer/1877849321) |

## What reviewers say

### Chapter

[App page](https://appshunter.io/ios/app/chapter-epub-and-pdf-reader/id6759279740)

**Features:** iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chapter Pro Monthly | $1.99 | per month |
| Chapter Pro Yearly | $19.99 | per year |
| Chapter Pro | $9.99 | one-time |


### Calypso Books

[App page](https://appshunter.io/ios/app/calypso-books/id6759281945)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chapter free?

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

### Is Calypso Books free?

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

### Do Chapter or Calypso Books have ads?

Neither Chapter nor Calypso Books shows ads.

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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.*