UniBook vs KeyReader
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
UniBook
Read full descriptionHide 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 βPlay Last Audiobookβ 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.
KeyReader
Read full descriptionHide full description
Read your own books and understand every word Import your books and read in a foreign language with ease. Tap any word to translate instantly, save new words as flashcards, and explore each chapter through guided questions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: KeyReader at 18.0 against UniBook's 26.0. On price, update cadence, ads and in-app purchases 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
Both are free to download. UniBook sells 1 one-off in-app purchase and KeyReader sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 27, 2026 and October 7, 2026 respectively.
| Parameter | UniBook | KeyReader |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 26.0 | 18.0 β better |
| Further details β not scored | ||
| Size | 15 MB | 7 MB |
| Age rating | +4 | 4+ |
| Developer | Denis Tronin | Oleg Strigunov |
In-app purchases
UniBook
- UniBook Premium$49.99
KeyReader
- Unlimited Reading$2.991 Month
- Unlimited Reading3 Days trial$19.991 Year
- Unlimited Reading$49.99
