csBooks vs EpubReader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
csBooks
This app allows users to read and manage ePub and PDF books from their device. It offers features like automatic thumbnail generation, reading progress tracking, customizable text size, and multiple themes for a comfortable reading experience.
- Read ePub and PDF files
- Manage book library
- Auto book thumbnail generation
- Reading progress tracking
- Customizable text size and font
- 8 stylish reading themes
- Cloud storage and desktop sync
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Read ePub, PDF, MOBI, Docx, CBZ, CBR, DJVU and MOBI book files with csBooks – the best ebook reader and digital library manager for iPhone and iPad. Import, organize, and read books offline with our all-in-one book reader app. The #1 ebook reader app for offline and online reading: ePub reader & ePub viewer PDF reader & PDF viewer MOBI reader & MOBI viewer CBZ comic book reader Word document reader (DOCX) Book Reader Features: ePub reader with adjustable fonts, text size & 8 reading themes PDF reader with page progress tracking & navigation MOBI ebook reader for Kindle-format files Comic book reader for CBZ files Book library manager with card view & list view Auto-generated book cover thumbnails Reading progress tracker Cloud sync & cloud backup for your ebook library Offline reading – read books without internet Import ebooks from Files, email & cloud storage Desktop sync for cross-device reading Best ebook reader for digital library management. csBooks organizes your ePub books, PDF books, MOBI ebooks, and comic books in one beautiful reading app. Fast ePub viewer, smooth PDF viewer, and full-featured book manager. Read ebooks offline. Sync your book library to desktop. Track reading progress. csBooks is the ebook reader and library app for serious readers. Download csBooks – ebook reader, PDF viewer & digital library app. ------- Developer contact: studiocaesium@gmail.com Privacy Policy: https://www.caesiumstudio.com/privacy-policy End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
EpubReader
Read EPUB books offline with a customizable reader. Listen to your books with built-in text-to-speech and sync your library across devices. Organize your collection with custom collections and smart sorting.
- Offline EPUB reading
- Built-in text-to-speech (TTS)
- iCloud library sync
- Customizable reading experience
- Organize books into collections
- Multiple import methods
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EpubReader is a clean, powerful ebook reader built exclusively for iPhone and iPad. Read EPUB books offline, listen with built-in text-to-speech, and sync your entire library across devices with iCloud. Import DRM-free EPUB books in seconds, organize them into custom collections, customize every detail of your reading experience — fonts, themes, dark mode — and pick up right where you left off on any device. Effortless Book Import • Import EPUB files from Files or iCloud Drive • WiFi Transfer – drag and drop books from Mac or PC • Open in from Safari • AirDrop support Fully Customizable Reading • Light, Sepia, Dark Mode & True Black (OLED) night mode themes • Adjust font size, line height, margins, and spacing • Choose from premium, highly readable fonts • Page curl animation or smooth vertical scrolling • Bookmarks with notes and color highlights Built-in Text-to-Speech (TTS) — Read Aloud • Listen to your ebooks hands-free like an audiobook • Real-time sentence highlighting • Automatic page turning • Great for multitasking or resting your eyes Automatic iCloud Sync • Sync books across iPhone and iPad • Reading progress, bookmarks & highlights stay updated • Secure and private — powered by your personal iCloud Smart Library & Collections • Organize your books into custom collections • Create multiple bookshelves for different genres, authors, or projects • Quickly add or move books between collections • Smart sorting by recent reads so your current book is always easy to find • Full Table of Contents navigation Privacy First • EpubReader never tracks your reading habits. • No analytics tracking. • No data selling. • No mandatory sign-ups. • All books stay on your device or securely in your personal iCloud. Download EpubReader today and enjoy a distraction-free reading experience. Note: EpubReader supports DRM-free EPUB files only. DRM-protected books are not supported.
Screenshots
Verdict
The clearest difference is in-app purchases: EpubReader at none against csBooks's 2. EpubReader also leads on ads (none vs shown). csBooks's advantage is update cadence (every 10 days vs every 3 months) and device support (4 vs 2). On price, review sentiment and iOS requirement 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. csBooks sells 2 in-app purchases, starting at $6.99 per month. EpubReader asks for nothing beyond the download.
csBooks ships an update every 10 days, EpubReader every 3 months. The most recent releases landed on October 12, 2026 and October 31, 2026 respectively.
| Parameter | csBooks | EpubReader |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (4 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 10 days — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 63 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Ravi Kumar Sharma | Penghui Zhao |
Customer experience
csBooks
EpubReader
In-app purchases
csBooks
- Unlimited Pro (Monthly)$6.991 Month
- Unlimited Pro (Yearly)$22.991 Year
EpubReader
No in-app purchases
