# Chapter vs spine

The clearest difference is in-app purchases: spine at none against Chapter's 3. spine also leads on iOS requirement (17.6 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. spine asks for nothing beyond the download.

## The numbers

| Metric | Chapter | spine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spine-bookshelf/id6812860012/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | — | Free |
| Size | 37 MB | 4 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sergiu Prodan](https://appshunter.io/developer/1531741524) | [Jessica Lee](https://appshunter.io/developer/6812860014) |

## 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 |


### spine

[App page](https://appshunter.io/ios/app/spine-bookshelf/id6812860012)

Visualize your reading history with a digital bookshelf. Search for books to create realistic spines based on cover art and page count, then arrange your collection. Keep your reading private and share your shelf as an image.

**Highlights:** Realistic book spine generation, Sort and organize your library, Mark books as read, reading, or want to read, Private shelf mode, Day and night themes, Export shelf as an image

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chapter free?

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

### Is spine free?

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

### Do Chapter or spine have ads?

Neither Chapter nor spine 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.*