# KyBook 2 Ebook Reader — EPub, MOBI, DjVu and More

> Versatile e-book reader supporting multiple formats, cloud sync, and text-to-speech. (iPhone/iPad app by Konstantin Bukreev.)

- Source: https://appshunter.io/ios/app/kybook-2-ebook-reader/id1018584176 (this page in markdown: same URL + `.md`)
- Developer: [Konstantin Bukreev](https://appshunter.io/developer/547576207)
- Category: Books, Education
- Price: Free with in-app purchases
- Rating: 4.70/5 from 2,337 App Store ratings · 250 written reviews indexed
- Age rating: 17+
- Requires: iOS 8.1 · 51 MB
- Languages: Greek, German (Germany), Russian, American English
- Released: 2016-09-30
- Data updated: 2026-08-24
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/kybook-2-ebook-reader/id1018584176/reviews.md

## What is KyBook 2 Ebook Reader?

Attention, since October 1, 2019, the third edition of the application is available on the App Store - KyBook 3 Reader. 

The best way to read your books ever!

KyBook supports all the major e-book formats, OPDS catalogs and Cloud Storage.
Continuously developing and improving in close contact with thousands of KyBook users.

Key features:



- EPUB, FB2, RTF, PDF, DJVU, MOBI, AZW3, CBR, CBZ, CBT, MP3, M4A, M4B formats
- OPDS catalogs

- Cloud Storage
- Flexible reading mode settings
- Handy cataloguer
- Text-to-speech technology

More:

- Supports e-books in EPUB (DRM-free), FictionBook (fb2, fbz, fb2.zip), TXT, RTF, PDF, DJVU, Comic Book (cbr, cbz, cbt), MobiPocket (mobi), Kindle (azw3), and Audio Book (mp3, m4a, m4b) formats.
- Provides access to enormous collection of free electronic books through OPDS-catalogs support.
- Finds books in your Cloud Storage or anywhere in Internet.
- Saves your books into iCloud, Dropbox, Yandex Disk, Google Drive, OneDrive, Cloud Mail.ru, ownCloud (WebDAV) and Shared folders (SMB/CIFS).
- Allows customize: font, colour theme, text size, text alignment mode, margins, paragraph indention, hyphenations and more.
- Provides easy navigation inside the book using table of content, bookmarks or notes.
- Helps organizing your books, cataloging them, grouping and sorting in different modes.
- Provides detailed information about each of your book.
- Allows choosing book covers from different sources, changing titles and subjects and even more.
- Uses text-to-speech technology to voice any e-book.
- Supports translation of text and the vocabularies in StarDict and Lingvo DSL format.
- Integrates with social networking services.
- Supports of archives in ZIP, RAR and TAR format.
- Provides Speed Reading.
- Allows to stream audio for audio books in Cloud Storage.
- Supports fuzzy search and search using regular expressions in a text book.
- Supports automatic text summarization and precis-writing.
- Supports preview of iWork, Microsoft Office, CSV, HTML files.

## Key features

- Supports EPUB, MOBI, PDF, DJVU, and more
- OPDS catalog and cloud storage integration
- Customizable reading modes (font, theme, size)
- Text-to-speech for e-books and audiobooks
- Book cataloging and organization
- Speed reading and text summarization

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Upgrade to Pro Version | $2.99 | one-time |
| Upgrade to Pro Version | $1.99 | one-time |


## What do users think of KyBook 2 Ebook Reader?

Overall sentiment: neutral

**Pros**

- 👍 Stable and solid
- 👍 Customizable reading experience
- 👍 Excellent reading app
- 👍 Great for reading PDFs and ebooks
- 👍 Syncs across devices
- 👍 Robust functionality

**Cons**

- 🐛 Bugs and crashes
- 💰 Aggressive push for paid upgrades
- 🔍 Confusing navigation and UI
- 📢 Intrusive ads
- 🔒 Clipboard access concerns
- 🗑️ Unable to delete books

**Commonly reported bugs**

- Books not loading properly
- Restore purchases not working
- Sync issues with cloud services
- Unexpected behavior after updates

**Most requested features**

- Ability to edit color themes
- Organize books into folders
- Annotation and note-taking features
- Resume reading from last page
- Goodreads integration
- Adjustable font size and brightness

## Recent user reviews (10 of 250)

All indexed reviews: https://appshunter.io/ios/app/kybook-2-ebook-reader/id1018584176/reviews.md

### 5/5 — Обратите внимание

*2026-05-12, version 1.2.8*

Замечательная читалка все отлично но на айфоне читает скобки. Борюсь с этим уже три месяца ничего не могу исправить.  Устанавливал и более новые версии такие как 3, эффекта нету. Может кто может помочь уже хочу продать этот айфон. На андроидах проблем ваще нету. Короче рекомендую отличная прога

### 5/5 — Perfecto

*2026-04-13, version 1.2.8*

Perfect reading app even using on ios 26

### 5/5 — Using many years

*2025-08-14, version 1.2.8*

I using Kybook started from first release. Always worked just perfect. Stable and solid. Good for iPhones and iPads

### 1/5 — False claim of ability to edit color themes. Annoying page turn animations.

*2025-05-04, version 1.2.8*

My options for page turns are annoying page curl animations, annoying slide-to-turn (no single tap to turn), or annoying continuous scrolling where I have to carefully stop in the exact right place. No option for a one-tap page turn with no animations. 

In the settings it claims there is the option to edit existing color themes or create new ones. This is a LIE. I have wasted a bunch of time carefully selecting the text, background, etc. colors I want, only for this nasty little app to just throw away all my work once I close the editing window. There is no “save” button, just a “back” button that deletes my changes.

### 1/5 — Spyware!

*2025-04-13, version 1.2.8*

I just opened kybook and was greeted with a notice that it had pasted from my browser! On what planet does an ebook reader need to read from the clipboard? I can't believe iOS doesn't have actual clipboard security. There was confidential information I had neglected to clear on that clipboard. Thanks to these jerk developers and Apple, I was violated. Heh, and they think I'm going to download a more spyware laden version that wants to charge a subscription to display a document.

### 1/5 — Бесячее сообщение «отключить рекламу»

*2025-03-23, version 1.2.8*

Бесячее сообщение «отключить рекламу» . А рекламы никакой и нет, за что деньги тогда платить? Только чтобы это сообщение пропало?

### 1/5 — Не работает

*2025-02-27, version 1.2.8*

Книги не получается читать. Все вылетает и требуют купить pro подписку.

### 5/5 — Mon application préférée pour lire et sauvegarder mes Ebook

*2024-09-25*

Après beaucoup d’essais d’applications je plébiscite KyBook 2. Meilleur que le 1 et le 3. Je l’utilise tous les jours !!! Gilles

### 5/5 — Zybus

*2024-09-12, version 1.2.8*

Excellent reading app Thank You

### 1/5 — Asks for paid upgrade

*2024-08-19, version 1.2.8*

This app is not working any more

## Frequently asked questions about KyBook 2 Ebook Reader

### What file formats does KyBook 2 Ebook Reader support?

This app supports a comprehensive list of e-book and audiobook formats, including EPUB (DRM-free), FictionBook (fb2, fbz, fb2.zip), TXT, RTF, PDF, DJVU, Comic Book (cbr, cbz, cbt), MobiPocket (mobi), Kindle (azw3), and Audio Book (mp3, m4a, m4b). It also supports archives in ZIP, RAR, and TAR formats.

### How can I add books to KyBook 2 Ebook Reader?

You can add books by accessing OPDS catalogs, integrating with cloud storage services like iCloud, Dropbox, Google Drive, and OneDrive, or by finding books anywhere on the internet. The app also supports streaming audiobooks directly from cloud storage.

### Is KyBook 2 Ebook Reader free to use?

The application is available for free, but it offers in-app purchases. This suggests that while the core reading functionality is free, certain advanced features or content might require a purchase.

### What customization options are available for reading?

The app provides extensive customization for a personalized reading experience. You can adjust font styles, color themes, text size, text alignment, margins, paragraph indentation, and hyphenations. It also includes features like speed reading and text summarization.

### Can this app read books aloud?

Yes, the app utilizes text-to-speech technology to voice any e-book, allowing you to listen to your books. This feature is also applicable to audiobooks streamed from cloud storage.

## Version history (last 5 releases)

### 1.2.8 — 2018-12-18

- Fixed crash when using the translation service in iOS 9.
- Few minor improvements.

### 1.2.7 — 2018-12-02

- Support for new iPads.
- Fixed several issues concerning fullscreen reading mode.
- Added an ability to hide "add a bookmark" button in the reader screen.
- Added an ability to add a bookmark through Notes screen.
- Few minor improvements.

### 1.2.4 — 2018-09-14

-  Added support for iOS 11, iPhone X
-  Added support for migration to KyBook 3

### 1.1.0 — 2017-07-05

Fixed an error occurring when using the translation service.

### 1.0.9 — 2017-06-27

Bug fixes and minor improvements.

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## More apps by Konstantin Bukreev

- [KyBook - EPub,FB2,PDF,DjVu Reader](https://appshunter.io/ios/app/kybook-epubfb2pdfdjvu-reader/id673027171)
- [BiLibre DjVu and PDF Reader](https://appshunter.io/ios/app/bilibre-djvu-and-pdf-reader/id1230039040)
- [KyBook 3 Ebook Reader](https://appshunter.io/ios/app/kybook-3-ebook-reader/id1348198785)

All apps by Konstantin Bukreev: https://appshunter.io/developer/547576207

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*