# Chapter vs Flumen

The clearest difference is iOS requirement: Flumen at 17.0 against Chapter's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Chapter sells 2 in-app purchases, starting at $1.99 per month and Flumen sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Chapter ships an update every 9 days, Flumen every 2 weeks. The most recent releases landed on September 15, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Chapter | Flumen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Size | 37 MB | 18 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Sergiu Prodan](https://appshunter.io/developer/1531741524) | [Mathias Jaeger-Pedersen](https://appshunter.io/developer/1848104509) |

## What reviewers say

### Chapter

[App page](https://appshunter.io/ios/app/chapter-book-tracker-and-tbr/id6759279740)

**Features:** Family Sharing

**In-app purchases (2)**

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


### Flumen

[App page](https://appshunter.io/ios/app/flumen-ebook-reader/id6776182656)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flumen Pro | $6.99 | one-time |


## Frequently asked questions

### Is Chapter free?

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

### Is Flumen free?

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

### Do Chapter or Flumen have ads?

Neither Chapter nor Flumen shows ads.

### Which is updated more often, Chapter or Flumen?

Chapter ships an update every 9 days, and Flumen every 2 weeks. Most recently, Chapter was updated on September 15, 2026 and Flumen on September 18, 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.*