# FBReader vs Ozone e

The clearest difference is in-app purchases: Ozone e at none against FBReader's 2. FBReader's advantage is ads (none vs shown) and review sentiment (52% vs 20%). On price, update cadence, monetization model and device support there is nothing between them.

Both are free to download. FBReader sells 1 one-off in-app purchase. Ozone e asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | FBReader | Ozone e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (128 ratings)](https://appshunter.io/ios/app/fbreader-epub-and-fb2-reader/id1067172178/reviews)** | — |
| Number of ratings | **128** | — |
| Positive reviews | **52.5% of reviews** | 20.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 22 MB | 51 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [FBReader.ORG Limited](https://appshunter.io/developer/1067172177) | [Ozone Entertainment AD](https://appshunter.io/developer/1563403622) |

## What reviewers say

### FBReader

[App page](https://appshunter.io/ios/app/fbreader-epub-and-fb2-reader/id1067172178)

A fast and versatile e-book reader supporting multiple formats like ePub, Kindle, and fb2. It offers cloud syncing for reading progress and a customizable interface. Upgrade to unlock unlimited library access and advanced features.

**Highlights:** Supports ePub, Kindle azw3, fb2, RTF, Word, HTML, and text, ePub3 and Readium LCP DRM support, Cloud syncing of library and reading positions, Customizable appearance and behavior options, Direct opening of downloaded files, Free version with library limits

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FBReader Full Edition | $12.99 | one-time |

**What reviewers like**

- 🚀 Fast and smooth reading experience
- 👍 Simple and intuitive interface
- 💡 Customizable font, margin, and layout options
- 🔒 Secure syncing across devices
- 🎨 Retro background textures

**What reviewers complain about**

- 🐛 Occasional crashes and freezes
- 🔧 Lack of advanced organization features (folders, shelves)
- 🚫 No PDF support
- 🔍 Inconsistent search and book discovery
- 🔒 Privacy concerns around data collection

**Reported bugs**

- Syncing issues with Google Drive
- Deletion of books from library
- Formatting problems with large footnotes
- Compatibility issues with newer iOS versions

**Requested features**

- Vertical scrolling mode
- Improved bookmark and annotation tools
- Ability to add/change book covers
- Text-to-speech functionality
- Better library management (read/unread, collections)


### Ozone e

[App page](https://appshunter.io/ios/app/ozone-e/id1563403620)

Access a vast library of Bulgarian books, both new and classic, directly on your device. Discover personalized recommendations and enjoy a free collection of titles. Organize your library with flexible filtering options.

**Highlights:** Thousands of Bulgarian books, Download books to app, Free library access, Filter by genre and author, Personalized content recommendations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FBReader free?

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

### Is Ozone e free?

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

### Do FBReader or Ozone e have ads?

Ozone e shows ads; FBReader does not.

### Which is updated more often, FBReader or Ozone e?

FBReader ships an update monthly, and Ozone e monthly. Most recently, FBReader was updated on October 11, 2026 and Ozone e on October 7, 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.*