# i2Reader vs csBooks

The clearest difference is review sentiment: csBooks at 100% against i2Reader's 47%. csBooks also leads on update cadence (every 10 days vs every 2 months). i2Reader's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. csBooks sells 2 in-app purchases, starting at $6.99 per month. i2Reader asks for nothing beyond the download.

i2Reader ships an update every 2 months, csBooks every 10 days. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | i2Reader | csBooks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (15 ratings)](https://appshunter.io/ios/app/i2reader/id322680924/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 47.1% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 63 MB |
| Requires iOS | **6.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Yuriy Melyushin](https://appshunter.io/developer/943454788) | [Ravi Kumar Sharma](https://appshunter.io/developer/1695922963) |

## What reviewers say

### i2Reader

[App page](https://appshunter.io/ios/app/i2reader/id322680924)

This app is an award-winning eBook reader supporting a wide range of formats including EPUB, PDF, and MOBI. It offers customizable styles, dictionary integration, and convenient ways to upload books via FTP, web server, or Calibre.

**Highlights:** Supports EPUB, PDF, RTF, HTML, FB2, MOBI, DOC, text, Customizable styles and dictionary support, Built-in FTP and Web servers for book uploads, Calibre integration for book management, Custom PDF reformatting engine, Autoscroll and auto-hyphenation, Integrated web browser for book downloads

**In-app purchases:** none


### 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:** macOS Compatibility, 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 i2Reader free?

i2Reader is free to download, with no in-app purchases.

### Is csBooks free?

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

### Do i2Reader or csBooks have ads?

csBooks shows ads; i2Reader does not.

### Which is updated more often, i2Reader or csBooks?

i2Reader ships an update every 2 months, and csBooks every 10 days. Most recently, i2Reader was updated on October 11, 2026 and csBooks on October 12, 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.*