# i2Reader Cloud vs Book.io

The clearest difference is review sentiment: Book.io at 97% against i2Reader Cloud's 48%. Book.io also leads on rating (4.8 vs 4.1) and in-app purchases (none vs 5). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. i2Reader Cloud sells 5 one-off in-app purchases. Book.io asks for nothing beyond the download.

Book.io holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 74 and 58 respectively. Written reviews point the same way: 48% of i2Reader Cloud's written reviews are positive against 97% of Book.io's.

i2Reader Cloud ships an update every 3 months, Book.io every 2 months. The most recent releases landed on September 29, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | i2Reader Cloud | Book.io |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (74 ratings)](https://appshunter.io/ios/app/i2reader-cloud/id968326317/reviews) | **[4.8 (58 ratings)](https://appshunter.io/ios/app/bookio/id1661003233/reviews)** |
| Number of ratings | **74** | 58 |
| Positive reviews | 48.4% of reviews | **96.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 37 MB | 31 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Yuriy Melyushin](https://appshunter.io/developer/943454788) | [Book.io, Inc](https://appshunter.io/developer/1661003235) |

## What reviewers say

### i2Reader Cloud

[App page](https://appshunter.io/ios/app/i2reader-cloud/id968326317)

This app offers a comfortable reading experience with cloud synchronization across devices. Enjoy customizable layouts, interactive features like footnotes and dictionaries, and the ability to download books from various cloud services. It supports multiple formats and allows family sharing of libraries.

**Highlights:** iCloud synchronization for library and reading progress, Customizable book layout (fonts, colors, spacing), Download books from Dropbox, Google Drive, Yandex Disk, Interactive footnotes and dictionary support, Family sharing and user reading statistics, Supports FB2, EPUB, MOBI, DOC, PDF formats, Auto-scrolling and auto-page turning

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Auto-scroll | $0.99 | one-time |
| Seamless textures | $0.99 | one-time |
| Auto turning | $0.99 | one-time |
| Online translator | $1.99 | one-time |
| Removal of limitations | $3.99 | one-time |


### Book.io

[App page](https://appshunter.io/ios/app/bookio/id1661003233)

Manage your digital library of eBooks and audiobooks with a user-friendly interface. Customize your reading experience with various themes and text settings, and enjoy features like bookmarking and embedded media. Own and control your digital content.

**Highlights:** eBook and Audiobook management, Customizable themes and text settings, Seamless navigation and bookmarking, Audiobook playback and reading/listening switch, Embedded video and fixed format support, Social media login

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is i2Reader Cloud free?

i2Reader Cloud is free to download, with in-app purchases available.

### Is Book.io free?

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

### Which has better reviews, i2Reader Cloud or Book.io?

Book.io is rated higher. i2Reader Cloud averages 4.1 out of 5 from 74 ratings, while Book.io averages 4.8 from 58 ratings.

### Do i2Reader Cloud or Book.io have ads?

Neither i2Reader Cloud nor Book.io shows ads.

### Which is updated more often, i2Reader Cloud or Book.io?

i2Reader Cloud ships an update every 3 months, and Book.io every 2 months. Most recently, i2Reader Cloud was updated on September 29, 2026 and Book.io on September 17, 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.*