KyBook 3 Ebook Reader

Name: KyBook 3 Ebook Reader
Rating: 4.7 (4548 reviews)
Author: Konstantin Bukreev

By: Konstantin Bukreev

Epub, Mobi, Djvu and More

Features & Capabilities

KyBook 3 Ebook Reader is a versatile reader and cataloger that supports major formats including EPUB, PDF, MOBI, DJVU, CBZ/CBR, FB2, and more. It integrates OPDS catalogs and cloud storage, offers comfortable reading modes, typography customization, auto scrolling, and text-to-speech for hands-free listening. Built for large books and offline use, it emphasizes speed and energy efficiency.

Key features include powerful annotations with export options, a built-in summary editor with Markdown export, a robust cataloguer with metadata and table-of-contents editing, and extensive storage options (local, cloud, WebDAV, and network shares). It also supports synchronization via subscription, offline search, and full-text search across books, making KyBook a comprehensive solution for reading, organizing, and annotating your eBook collection.

User Growth & Download Statistics

App Books Education Content

By:

Konstantin Bukreev

Rating:

4.70

(4,548) 12 new ratings

Version:

v0.7.8 Last updated: 2019-02-23

Version code:

830382114

Creation date:

2018-09-15

Compatible devices:

Size:

53.32MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-11

Compare stats and ranking:

Ranking

# 27,593 ▼ 19

Other rankings

#37 in reader keyword 73 ▲ 17#52 in booking keyword 37 ▲ #64 in ahmedzaki keyword 0 ▲

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Konstantin Bukreev

Apple Apps Store

https://apps.apple.com/us/app/kybook-3-ebook-reader/id1348198785

Website:

http://kybook-reader.com/

User Reviews

Users praise KyBook 3 for strong PDF handling, deep library organization (folders, tagging, metadata), and a feature-rich experience with OPDS access. However, recurring issues dampen enthusiasm: the app feels poorly maintained with years of no updates; subscription prompts and unclear pricing frustrate users; login and cloud-sync problems block syncing; and performance bugs like lag after updates. Overall, it’s powerful and customizable, but reliability and ongoing maintenance are major concerns.

Pros

Excellent library organization with folders and strong tagging/metadata
Strong PDF support with fast rendering
Feature-rich experience (annotations/notes, TTS, translation, metadata editing)
OPDS support and access to third-party online libraries

Cons

Not maintained / appears abandoned; no updates for years
Subscription prompts and unclear pricing; frustrating paid model
Login and cloud-sync issues blocking account creation or syncing
Performance problems like lag and unresponsiveness after updates

Recent reviews

I can’t live without this ebook reader. There are so many bells and whistles, and it is just not that difficult to figure out.

by BD*****, 2026-05-27

the main reason i use the app was broken, i got the junky default voice no matter if i choose a downloaded better version. however this seems to be fixed now!

by wr*****, 2026-04-27

Очень Крутая читалка но на айфоне немного глючит. Читает знаки скобок и не ставится на паузу с наушников. А если поставить то не запускается обратно. Но это мне кажется в айфоне проблема а так супер суперский советую