Comparison

UniBook vs Inspan Book Reader

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

Head to head
About

UniBook

Features
Read full description

Tired of subscriptions? UniBook is a one-time-purchase reader for the EPUB, PDF, M4B, and MP3 files you own. Read and listen offline, keep your library organized, and pick up exactly where you left off. β€” WHY READERS CHOOSE UNIBOOK β€” PAY ONCE, READ FOR LIFE A single in-app purchase unlocks the full reader. No monthly plan and no automatic renewal. YOUR LIBRARY STAYS YOURS Import compatible DRM-free files through Files, iCloud Drive, or the Share extension. Your imported books remain on your device, UniBook does not upload your library, and no account is required. β€” FEATURES β€” EPUB READER β€’ Adjustable text size and reading themes β€’ Light, sepia, and dark reading themes β€’ Save highlights and quotes β€’ Share quotes as polished images β€’ Resume from your saved position β€’ See reading progress in the reader and your library PDF READER β€’ Native PDF viewing β€’ Page and progress tracking β€’ Saved position for reliable resume β€’ Progress visible alongside your other books AUDIOBOOK PLAYER β€’ M4B and MP3 audiobooks β€’ Single-file and multi-file books β€’ Playback speed from 0.5x to 2x β€’ Sleep timer β€’ Background playback and lock-screen controls β€’ Resume from your last position β€’ Chapter navigation LIBRARY MANAGEMENT β€’ Custom shelves and favorites β€’ Dedicated Reading and Finished shelves β€’ Active books stay easy to reach; completed books move to the end β€’ Import several compatible files from Files β€’ Add books and audiobooks from other apps with the Share extension β€’ Share or remove your own files at any time READING STATISTICS β€’ Daily reading and listening time β€’ Reading streaks and daily goals β€’ Yearly activity graph β€’ Year in Review SIRI β€’ Resume your last audiobook with the β€œPlay Last Audiobook” shortcut Supported formats: EPUB, PDF, M4B, MP3 UniBook is built for readers who manage their own digital library and want a focused, private reading experience without a recurring subscription. Note: UniBook is a reader app. It does not sell, distribute, or provide book content. You are responsible for ensuring that you have the right to use every file you import. DRM-protected files are not supported.

About

Inspan Book Reader

Features
Read full description

Make your books feel at home on every screen. Inspan Book Reader brings EPUB, FB2 and TXT files into a focused library with comfortable, customizable reading. Add books from your device, files shared from other apps, supported ZIP archives, Dropbox or OPDS catalogs. Once a book is imported, you can keep reading it offline. No account is required for local files. READ YOUR BOOKS β€’ Open EPUB, FB2 and plain-text TXT books. β€’ Import supported books from ZIP archives. β€’ Browse chapters and jump straight to the part you need. β€’ Return to your saved reading position. β€’ Add bookmarks with short excerpts for quick navigation. β€’ Choose page curl, slide or no page-turn animation. ORGANIZE YOUR LIBRARY β€’ See book covers, titles, authors and reading progress in one place. β€’ Search your library by title or author. β€’ Mark favorites for easy access. β€’ Share a book file or remove it from the library. MAKE EVERY PAGE YOURS β€’ Switch between light and dark interface themes. β€’ Use light, dark or fully custom reading colors. β€’ Pick a font and adjust font size, line spacing and paragraph spacing. β€’ Set left and right margins, text alignment and automatic hyphenation. β€’ Show or hide page numbers. FIND AND IMPORT BOOKS Add OPDS catalogs and browse their sections inside the app. A Project Gutenberg catalog is ready to explore, and you can add other compatible catalogs. Connect Dropbox with read-only file access to browse folders and import supported books. Network access is only needed for online catalogs and Dropbox. Inspan Book Reader is designed for a calm reading experience, whether you read a short story on your phone or settle into a novel on a larger screen.

Screenshots

UniBook4 screens
Inspan Book Reader4 screens

Verdict

The call

The clearest difference is in-app purchases: Inspan Book Reader at none against UniBook's 1. Inspan Book Reader also leads on update cadence (every 2 days vs every 3 weeks) and device support (4 vs 2). On price and ads there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. UniBook sells 1 one-off in-app purchase. Inspan Book Reader asks for nothing beyond the download.

UpkeepUpdate frequency

UniBook ships an update every 3 weeks, Inspan Book Reader every 2 days. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

Scorecard4 real differences Β· 2 level
UniBook versus Inspan Book Reader: the parameters behind the verdict, then further details
ParameterUniBookInspan Book Reader
PriceFreeFree
Update frequencyEvery 3 weeksEvery 2 days β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPadiPhone, iPad, iPod, Mac β€” better
Requires iOS26.015.0 β€” better
Further details β€” not scored
Size15 MB35 MB
Age rating+44+
DeveloperDenis TroninNikolay Vorobyev

In-app purchases

1 purchases

UniBook

One-time1
  • UniBook Premium$49.99
None

Inspan Book Reader

No in-app purchases

Questions

Is UniBook free?
UniBook is free to download, with in-app purchases available.
Is Inspan Book Reader free?
Inspan Book Reader is free to download, with no in-app purchases.
Do UniBook or Inspan Book Reader have ads?
Neither UniBook nor Inspan Book Reader shows ads.
Which is updated more often, UniBook or Inspan Book Reader?
UniBook ships an update every 3 weeks, and Inspan Book Reader every 2 days. Most recently, UniBook was updated on October 13, 2026 and Inspan Book Reader on October 24, 2026.

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