FBReader vs Библиотека ЦС
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FBReader
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.
- 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
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FBReader is a fast and easy-to-use e-book reader for iPhone and iPad. It supports all major e-book formats, including ePub (with key ePub3 features), Kindle azw3, and fb2 (.zip). You can open both unprotected books and ePub files protected with Readium LCP DRM. FBReader also reads RTF, Word (.doc), HTML, and plain text, so you can keep all your books and documents in one place. Read anywhere and pick up right where you left off. FBReader can sync your library, reading positions, bookmarks, and more across devices using the FBReader Book Network, a cloud service powered by Google Drive. If you prefer managing files yourself, you can download books in your browser and open them directly with FBReader. A wide range of appearance and behavior options lets you customize the reading experience to match your preferences. Free version and upgrade options: • The free version allows up to 10 books in your library. • The built-in translation feature is disabled. Upgrade to the full version to remove these limits and enjoy the complete FBReader experience.
Библиотека ЦС
Access and read church Slavonic texts offline. This app features an improved interface with simplified navigation, a table of contents, and viewing history. Create bookmarks and enjoy a growing library of books.
- Offline reading of church Slavonic texts
- Improved user interface
- Simplified navigation
- Table of contents
- Viewing history
- Bookmark creation
- Growing book library
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Приложение позволяет просматривать тексты различных книг на церковно-славянском языке. Книги загружаются с удаленного сервера и сохраняются на устройстве для последующего чтения в режиме "оффлайн". По сравнению с предыдущей версией проделана огромная работа по улучшению интерфейса. Учтены пожелания пользователей: упрощена навигация по текстам книг, добавлено удобное содержание и список истории просмотра. Добавлена возможность создания закладок, указывающих на произвольное место книги. Удалены громоздкие и ненужные элементы интерфейса, а также сделано много других приятных изменений. Список доступных в данный момент книг не является окончательным - периодически будет производиться добавление новых книг. Замечания, пожелания и предложения, а также все интересующие вопросы можно обсудить на форуме по адресу https://forum.alexsem.org
Screenshots
Verdict
The clearest difference is review sentiment: Библиотека ЦС at 100% against FBReader's 52%. Библиотека ЦС also leads on rating (5.0 vs 3.7) and in-app purchases (none vs 2). FBReader's advantage is update cadence (monthly vs every 16 months) and ratings volume (128 vs 2). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. FBReader sells 1 one-off in-app purchase. Библиотека ЦС asks for nothing beyond the download.
Библиотека ЦС holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: FBReader has 128 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 52% of FBReader's written reviews are positive against 100% of Библиотека ЦС's.
FBReader ships an update monthly, Библиотека ЦС every 16 months. The most recent releases landed on October 15, 2026 and September 22, 2026 respectively.
| Parameter | FBReader | Библиотека ЦС |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (128 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 52.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 128 — better | 2 |
| Update frequency | Monthly — better | Every 16 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 29 MB |
| Age rating | 17+ | 4+ |
| Developer | FBReader.ORG Limited | Olexandr Klyuchka |
Customer experience
FBReader
Библиотека ЦС
Bugs and requests
FBReader
Reported bugs
4 issues- Syncing issues with Google Drive
- Deletion of books from library
- Formatting problems with large footnotes
- Compatibility issues with newer iOS versions
Requested features
5 requests- Vertical scrolling mode
- Improved bookmark and annotation tools
- Ability to add/change book covers
- Text-to-speech functionality
- Better library management (read/unread, collections)
Библиотека ЦС
Not enough reviews yet to summarise bugs or requests.
In-app purchases
FBReader
- FBReader Full Edition2 variants$12.99
Библиотека ЦС
No in-app purchases
Questions
Is FBReader free?
Is Библиотека ЦС free?
Which has better reviews, FBReader or Библиотека ЦС?
Do FBReader or Библиотека ЦС have ads?
Which is updated more often, FBReader or Библиотека ЦС?
Other comparisons
