PDF & Document Library vs Oku
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
PDF & Document Library
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PDF Book Reader is a clean and powerful reading app for organizing and reading PDF books, study notes and documents on iPhone and iPad. Import your PDFs, browse your library with automatically generated covers, and continue reading from the page you left off. Search, favorites, shelves, reading progress and sorting tools help keep every document organized. In the reader, you can switch between single page, continuous scrolling and two-page layouts, with horizontal or vertical reading options. Choose normal, sepia, gray or night mode and adjust the reading experience to your eyes. Highlight text, add notes, save bookmarks and search inside your documents. PDF Book Reader makes long PDFs easier to read, revisit and manage. Key features: Import and share PDF files Automatic cover generation Continue from your last page Shelves, favorites, filters and sorting In-document search Bookmarks Color highlights and notes Normal, sepia, gray and night themes Single page, continuous and two-page views iPhone and iPad support
Oku
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Oku is a calm reading room designed to help you fall in love with books again. No ads, no stream of distractions β just you and your book. FEELS LIKE A REAL BOOK β’ Pages curl under your finger; hold a tablet sideways and two pages sit side by side β’ 14 reading themes and 19 typefaces, adjustable size, line spacing and margins β’ Add your own EPUB and PDF files β’ Highlight, take notes, bookmark, search inside the book β’ Press and hold a word to see its meaning instantly AUDIOBOOKS β’ Any book becomes an audiobook with one tap; each word lights up as it is read β’ Natural voices in Turkish, English, Russian and Romanian β’ Sleep timer and reading speed READING COMPANION β’ Ask βWhat happened where I left off?β and get a short recap β’ Ask about characters, hard words or historical background β it never spoils the ending β’ Reading in another language? Translate any sentence into yours β’ Short questions at the end of a chapter show how much you understood EYE COMFORT β’ Warm light filter and extra dimming β’ Automatic night mode in the evening β’ Eye break reminders based on the 20-20-20 rule β’ Soft contrast and airy letter spacing FOCUS AND HABIT β’ 11 focus scenes: rainy library, fireside, night train and more β’ Daily goal, streaks, badges and reminders β’ A short survey builds your reader profile and personal tips β’ Reading club with friends and a weekly family goal β’ A shareable year-in-reading summary FOR KIDS β’ Every child gets their own profile, shelf and badges β’ Books suggested for their level, including stories in English β’ Age-appropriate stories made just for them, about the things they love β’ Parent PIN and a weekly reading report β’ No email or password for kids β just a nickname and birth year TENS OF THOUSANDS OF FREE CLASSICS Public-domain books from Project Gutenberg, Standard Ebooks, Wikisource and more, added to your library with one tap. EVERYWHERE Your books, notes and current page are the same on iPhone, iPad and okureader.com. Books you open can be read offline. Your privacy matters: no ads, your data is never sold, and you can download all your data or delete your account at any time.
Screenshots
Verdict
The clearest difference is ads: Oku at none against PDF & Document Library's shown. On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | PDF & Document Library | Oku |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | β |
| Ads | Yes | No β better |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.4 β better |
| Further details β not scored | ||
| Size | 8 MB | 43 MB |
| Age rating | 4+ | 12+ |
| Developer | Salih ONUS | BBSOFT DIGITAL |
In-app purchases
PDF & Document Library
No in-app purchases
Oku
No in-app purchases








