# e vs csBooks

The clearest difference is ads: e at none against csBooks's shown. e also leads on iOS requirement (12.4 vs 15.0). csBooks's advantage is update cadence (every 2 weeks vs every 16 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. e sells 6 one-off in-app purchases and csBooks sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

e ships an update every 16 months, csBooks every 2 weeks. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | e | csBooks |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 61 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [e-publish](https://appshunter.io/developer/881882216) | [Ravi Kumar Sharma](https://appshunter.io/developer/1695922963) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-publish/id1176518626)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Das alte Karussell | Free | one-time |
| The old merry-go-round | Free | one-time |
| Knirps | $0.99 | one-time |
| Knirps im Kinderzoo | $0.99 | one-time |
| Tiny at the children's zoo | $0.99 | one-time |
| Tiny | $0.99 | one-time |


### csBooks

[App page](https://appshunter.io/ios/app/csbooks-epub-and-pdf-reader/id6477337382)

This app allows users to read and manage ePub and PDF books from their device. It offers features like automatic thumbnail generation, reading progress tracking, customizable text size, and multiple themes for a comfortable reading experience.

**Highlights:** Read ePub and PDF files, Manage book library, Auto book thumbnail generation, Reading progress tracking, Customizable text size and font, 8 stylish reading themes, Cloud storage and desktop sync

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Pro (Monthly) | $6.99 | per month |
| Unlimited Pro (Yearly) | $22.99 | per year |


## Frequently asked questions

### Is e free?

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

### Is csBooks free?

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

### Do e or csBooks have ads?

csBooks shows ads; e does not.

### Which is updated more often, e or csBooks?

e ships an update every 16 months, and csBooks every 2 weeks. Most recently, e was updated on November 2, 2026 and csBooks on November 8, 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.*