# Chapters vs Atomic KB

The clearest difference is price: Atomic KB at Free against Chapters's $9.99. Atomic KB also leads on update cadence (every 2 months vs every 7 months). Chapters's advantage is device support (4 vs 2). On ads, in-app purchases and iOS requirement there is nothing between them.

Atomic KB is free to download; Chapters costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chapters ships an update every 7 months, Atomic KB every 2 months. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Chapters | Atomic KB |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/chapters/id946792169/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 1 MB | 6 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Two-Byte Software Inc.](https://appshunter.io/developer/946792168) | [Foldspace Labs LLC](https://appshunter.io/developer/1796614941) |

## What reviewers say

### Chapters

[App page](https://appshunter.io/ios/app/chapters/id946792169)

This app allows users to create and edit ePub ebook files. It supports viewing, formatting text, and saving changes. Features like iCloud sync, autosave, and unlimited undo enhance the editing experience.

**Highlights:** Create and edit ePub files, View documents in vertical scroll, Edit and format text, Save changes to files, iCloud Drive sync, Autosaving, Unlimited undo/redo

**In-app purchases:** none


### Atomic KB

[App page](https://appshunter.io/ios/app/atomic-kb/id6759266634)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chapters free?

Chapters costs $9.99, with no in-app purchases.

### Is Atomic KB free?

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

### Do Chapters or Atomic KB have ads?

Neither Chapters nor Atomic KB shows ads.

### Which is updated more often, Chapters or Atomic KB?

Chapters ships an update every 7 months, and Atomic KB every 2 months. Most recently, Chapters was updated on October 2, 2026 and Atomic KB on October 5, 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.*