Comparison

UniBook vs JustReader

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

JustReader

A free, native reader for Mac, iPad, and iPhone that supports various file formats. It offers a customizable reading experience with multiple themes, fonts, and scroll options, plus on-device translation and no ads or tracking.

Highlights
  • Supports EPUB, FB2, MOBI, HTML, TXT, RTF, DOC/DOCX
  • Customizable themes, typefaces, and palettes
  • Continuous scroll, paged, or two-page spread
  • On-device translation
  • Chapter navigation and in-book search
  • No ads or tracking
Read full description

JustReader is a free, native reader for Mac, iPad, and iPhone. Open a book file and read it the way it should look β€” one book at a time, no library to manage, no account, no ads. OPENS WHAT YOU HAVE EPUB, FB2, MOBI, HTML, TXT, RTF, DOC/DOCX (Mac), and their ZIP variants β€” with chapter extraction, footnotes, encoding detection, and embedded images. THE FULL READING EXPERIENCE Nine typefaces and 41 themes across five palettes, plus Typewriter and Terminal. Continuous scroll, paged, or two-page spread. Real hyphenation in Latin, Cyrillic, CJK, Arabic, and Greek. Read Aloud with word-by-word highlighting. On-device translation β€” nothing leaves your device. Chapter navigation, in-book search, an image gallery, and a fullscreen mode with multiple clock styles. PRIVATE BY DEFAULT No analytics, no telemetry, no tracking, no ads. Files stay on your device. WANT YOUR LIBRARY TO FOLLOW YOU? ContinuousReader is the full version: an iCloud-synced library with your reading position to the exact paragraph on every device, bookmarks and notes, OPDS catalogs, reading statistics, folders, and more. Free.

Screenshots

UniBook4 screens
JustReader4 screens

Verdict

The call

The clearest difference is in-app purchases: JustReader at none against UniBook's 1. JustReader also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support 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. JustReader asks for nothing beyond the download.

UpkeepUpdate frequency

UniBook ships an update every 3 weeks, JustReader fortnightly. The most recent releases landed on September 9, 2026 and September 23, 2026 respectively.

Scorecard2 real differences Β· 6 level
UniBook versus JustReader: the parameters behind the verdict, then further details
ParameterUniBookJustReader
PriceFreeFree
Positive reviewsβ€”0.0% of reviews
Update frequencyEvery 3 weeksFortnightly β€” better
AdsNoNo
In-app purchasesYesNo β€” better
Monetizationβ€”Free
DevicesiPhone, iPadiPhone, iPad, Mac β€” better
Requires iOS26.017.0 β€” better
Further details β€” not scored
Size15 MB14 MB
Age rating+44+
DeveloperDenis TroninOleksii Koshkin

In-app purchases

1 purchases

UniBook

One-time1
  • UniBook Premium$49.99
None

JustReader

No in-app purchases

Questions

Is UniBook free?
UniBook is free to download, with in-app purchases available.
Is JustReader free?
JustReader is free to download, with no in-app purchases.
Do UniBook or JustReader have ads?
Neither UniBook nor JustReader shows ads.
Which is updated more often, UniBook or JustReader?
UniBook ships an update every 3 weeks, and JustReader fortnightly. Most recently, UniBook was updated on September 9, 2026 and JustReader on September 23, 2026.

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