# MOBI Reader vs FBReader

The clearest difference is rating: MOBI Reader at 4.0 against FBReader's 3.7. MOBI Reader also leads on review sentiment (63% vs 52%) and iOS requirement (10.0 vs 13.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. MOBI Reader sells 4 one-off in-app purchases and FBReader sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

MOBI Reader holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 188 and 129 respectively. Written reviews point the same way: 63% of MOBI Reader's written reviews are positive against 52% of FBReader's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | MOBI Reader | FBReader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (188 ratings)](https://appshunter.io/ios/app/mobi-reader-reader-for-mobi-azw-azw3-prc/id1007491919/reviews)** | [3.7 (129 ratings)](https://appshunter.io/ios/app/fbreader-epub-and-fb2-reader/id1067172178/reviews) |
| Number of ratings | **188** | 129 |
| Positive reviews | **63.1% of reviews** | 52.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 129 MB | 22 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 17+ | 17+ |
| Developer | [LTD DevelSoftware](https://appshunter.io/developer/717594986) | [FBReader.ORG Limited](https://appshunter.io/developer/1067172177) |

## What reviewers say

### MOBI Reader

[App page](https://appshunter.io/ios/app/mobi-reader-reader-for-mobi-azw-azw3-prc/id1007491919)

This app provides a robust reading experience for various ebook formats, including MOBI, AZW, and PRC. It offers extensive customization options for text, page display, and integrates with cloud services for easy access to your library. Enjoy a comfortable and efficient way to read your digital books.

**Highlights:** Supports MOBI, AZW, AZW3, PRC formats, Customizable text and page display options, Cloud service integration (Google Drive, Dropbox, etc.), Speech synthesizer for audio reading, Multiple page turning animations, Night mode and brightness control, Built-in file manager and web browser

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thank the Developer | $0.99 | one-time |
| Appearance Customization | $1.99 | one-time |
| Additional Formats | $3.99 | one-time |
| Pro Version | $5.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 📚 Supports various book formats
- 🔊 Text-to-speech functionality
- 💻 Works well on both iPhone and iPad

**What reviewers complain about**

- 🐛 Crashes and freezes
- 📂 Difficulty importing books
- 🔍 Unintuitive user interface
- 💰 Costly for additional features
- 🔋 High battery consumption

**Reported bugs**

- Crashes when opening certain book files
- Inability to read MOBI and AZW3 files
- Syncing issues with cloud storage providers

**Requested features**

- Dark mode option
- Improved file management
- Better support for ePub and MOBI formats
- Sleep timer for reading sessions


### 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)


## Frequently asked questions

### Is MOBI Reader free?

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

### Is FBReader free?

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

### Which has better reviews, MOBI Reader or FBReader?

MOBI Reader is rated higher. MOBI Reader averages 4.0 out of 5 from 188 ratings, while FBReader averages 3.7 from 129 ratings.

### Do MOBI Reader or FBReader have ads?

Neither MOBI Reader nor FBReader shows ads.

### Which is updated more often, MOBI Reader or FBReader?

MOBI Reader ships an update monthly, and FBReader monthly. Most recently, MOBI Reader was updated on October 24, 2026 and FBReader on October 29, 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.*