Comparison

Book Isle vs Omnia Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Book Isle

This app allows you to connect to your personal NAS, WebDAV, SMB, OPDS, or Calibre library to import, browse, search, download, and read local and remote books. It supports a wide range of file formats and offers a robust local reading experience with features like full-text search and highlighting.

Highlights
  • Connect to NAS, WebDAV, SMB, OPDS, Calibre
  • Import and manage multiple book formats
  • Full-text search and bookmarking
  • Remote reading and downloading
  • Private synchronization of reading progress
  • Face ID app lock for privacy
Features
Read full description

Book Isle is an e-book reader designed for personal private libraries. You can connect your iPhone and iPad to your own NAS, WebDAV, SMB, OPDS, or Calibre library, import, browse, search, download, and read local and remote books. The app does not provide an online bookstore, does not host or distribute book content, and your book files are still managed by your local device or your own private library. Main functions: - Private library connection: Supports WebDAV, SMB, OPDS, Calibre Content Server, and Calibre metadata.db. - Multi-format bookshelf: Supports the import, management, and reading of TXT, EPUB, PDF, Markdown, HTML, FB2, RTF, DOCX, CBZ, and common audiobook formats; MOBI, AZW, AZW3, CBR, DJVU can be imported, managed, filtered, and synchronized. It is recommended to convert them to EPUB, PDF, or CBZ for reading. - Local reading experience: Supports bookshelf grid/list, sorting, tagging, rating, reading status, full-text search, bookmarking, notes, highlighting, book excerpt cards, and reading statistics. - Remote reading and downloading: Browse private libraries from NAS, OPDS, or Calibre, download or stream supported book formats on demand. - Private synchronization: Synchronize reading progress, book metadata, notes, highlights, tags, reading statistics, and reading settings through the WebDAV directory you have configured. - Privacy and security: No self-built account system; supports Face ID app lock; book files will not be automatically uploaded to our servers due to synchronization function. ShuYu is suitable for readers who already have NAS, Calibre, WebDAV directories, or OPDS book sources, allowing them to manage their private book collections with a quiet and reliable reader. Subscription and purchase instructions: Bibliophile Pro offers monthly and annual memberships with automatic renewal, as well as a one-time purchase for a permanent membership. After activation, users can enjoy member-only features such as browsing, searching, downloading, and remote reading of private libraries via NAS/WebDAV/SMB, OPDS, Calibre, as well as private WebDAV synchronization. Monthly and annual memberships are auto-renewable subscriptions on the App Store. After confirming your purchase, the fee will be deducted from your Apple ID account; the subscription will automatically renew before the end of the current period, unless you turn off auto-renewal at least 24 hours before the end of the current subscription period; the renewal fee will be confirmed and deducted by Apple within 24 hours before the end of the current period. You can manage or cancel your subscription in iOS Settings > Apple ID > Subscriptions, or open the App Store subscription management page from the in-app membership page. After canceling your subscription, you can still use the membership benefits until the end of the current paid period. The actual price, trial, promotions, and available items are subject to the display on the App Store purchase confirmation page. Refunds are processed by Apple according to its rules. After membership expires, is cancelled, is refunded, or the transaction is revoked, the remote library and private sync features that require membership will be locked; downloaded books, local reading, local notes, and local shelf management can still be used. The specific agreement is as follows: Terms: https://sobison.github.io/nasbook/auto-renewable-subscription-terms.html membership: https://sobison.github.io/nasbook/membership-agreement.html Privacy: https://sobison.github.io/nasbook/privacy-policy.html

About

Omnia Reader

Features
Read full description

Omnia Reader is a universal e-book reader that opens almost anything — EPUB, PDF, CBZ/CBR comics, MOBI & AZW3 (Kindle), TXT, Markdown, HTML, DOCX, RTF, FB2, CSV — built entirely with native iOS frameworks. No accounts, no tracking, no ads. Your books and reading data stay on your device. READ EVERYTHING, FREE • 12+ formats, unlimited local library • Resume, table of contents, bookmarks • Comics with chapters and zoom; even GB-sized files open instantly • Day/night themes, system fonts, adjustable size, spacing and margins • Dictionary lookup and translation, full-text search • Read-aloud (TTS): automatic voice per language, background playback, lock-screen controls, follow-along, cross-chapter • 4-color highlights + notes (3 per book; unlimited in PDFs), export to Markdown • Beautiful quote cards to share • 17 languages, built-in handbook UNLOCK OMNIA PRO (one-time, no subscription) • On-device AI: summaries, Q&A and vocabulary — free, offline, private • Sync reading progress, bookmarks and highlights across devices — and your book files too • Remote libraries: WebDAV, OPDS, iCloud Drive • Unlimited highlights • Import your own fonts (.ttf/.otf) • Paged mode incl. paged EPUB, page-curl animation, two-page, vertical CJK, justify • Vocabulary deck with spaced repetition, tags, advanced stats WHY OMNIA • Truly native — fast, light, no third-party SDKs • Works fully offline • No subscription, no ads, no data collection • Buy Pro once, use on iPhone and iPad Bring your own books and enjoy reading.

Screenshots

Book Isle4 screens
Omnia Reader4 screens

Verdict

The call

The clearest difference is price: Omnia Reader at Free against Book Isle's $0.99. Book Isle's advantage is update cadence (every 8 days vs every 6 weeks) and iOS requirement (15.6 vs 26.0). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Omnia Reader is free to download; Book Isle costs $0.99 up front. Book Isle sells 3 in-app purchases, starting at $0.99 per month and Omnia Reader sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Book Isle ships an update every 8 days, Omnia Reader every 6 weeks. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 7 level
Book Isle versus Omnia Reader: the parameters behind the verdict, then further details
ParameterBook IsleOmnia Reader
Price$0.99Free — better
Rating5.0 (2 ratings) — better—
Positive reviews94.3% of reviews—
Number of ratings2 — better—
Update frequencyEvery 8 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better26.0
Further details — not scored
Size50 MB9 MB
Age rating9+4+
DeveloperAnyi County Bingzhiyi Trading Co., Ltd.LiChuan Lin

In-app purchases

3 purchases

Book Isle

Subscriptions2
  • Monthly membership$0.991 Month
  • Annual Membership$2.991 Year
One-time1
  • Permanent member$7.99
1 purchases

Omnia Reader

One-time1
  • Pro$9.99

Questions

Is Book Isle free?
Book Isle costs $0.99, and also offers in-app purchases.
Is Omnia Reader free?
Omnia Reader is free to download, with in-app purchases available.
Do Book Isle or Omnia Reader have ads?
Neither Book Isle nor Omnia Reader shows ads.
Which is updated more often, Book Isle or Omnia Reader?
Book Isle ships an update every 8 days, and Omnia Reader every 6 weeks. Most recently, Book Isle was updated on October 16, 2026 and Omnia Reader on October 12, 2026.

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