Bibooks vs Duri
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bibooks
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Bibooks is an innovative PDF reading application that brings your reading experience into the digital world. With realistic page-turning animations, you’ll feel like you're holding a real book while reading. Featuring a user-friendly interface and customizable reading settings, Bikitap offers a unique experience for readers of all ages. Features: • Realistic Page-Turning Animation: Enjoy smooth and natural page transitions that enhance your reading experience. • PDF File Support: Easily add, manage, and read your own PDF books. • Customizable Settings: Adjust font size, background, brightness, and other reading preferences to suit your needs. • Simple and Elegant Design: A modern and intuitive interface for a seamless reading experience. Step into the world of digital books with Bikitap, rediscover your favorite books, and make reading more enjoyable than ever!
Duri
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Duri is a reader for the books and documents you already have: EPUBs, PDFs and the scans of them, comics, plain text and Markdown, and articles saved from the web. It turns their pages like a book, remembers where you stopped, and keeps your highlights and notes where you can find them. PAGES THAT TURN LIKE PAPER A real page curl that follows your finger, the back of the leaf showing through, on every kind of file. On an iPad on its side the book lies open as a two-page spread, with the spine down the middle and a double-page comic panel across both. MADE TO BE READ FOR HOURS Four themes free and ten more with Pro, among them an E-ink theme that stops every animation. Five reading faces, and your own fonts with Pro. Line spacing and margins, a page you can pinch. Footnotes open where you are. READS ALOUD Any book, any document, even a scanned PDF, whose words Duri recognises on your phone. Press Listen and the voice begins within a second or two, from the page you are on or from any sentence you choose, and follows you when you turn the page. A listening view like lyrics, lit word by word, in a voice of Duri's own that runs on your phone: four to choose from, and nothing you read leaves the device. Ten minutes a day are free. YOUR NOTES STAY YOURS Highlight in five colours, write notes (typed or by hand), copy with a citation, make a quote card (Pro). Draw on a PDF with a pen, a highlighter and an eraser, and share the PDF with your marks in it. Export everything as Markdown or plain text, always, for free. AWAY FROM THE APP Widgets for the book you're reading, what's playing and your daily reading goal. A listening remote on your Apple Watch. Save a page from Safari's share sheet and it's an article in your library. Follow a site and new pieces arrive by themselves. On an iPad, read a book beside its translation. ON IPHONE DUO Open, a book lies across both screens with its spine on the fold, and the library and contents use both pages. Half folded, the page stands above the fold with the controls below, so it reads on a table by itself. HONEST ABOUT WHAT IT CAN'T DO Books locked to another store (Kindle, Apple Books) can't be opened here, and Duri says so rather than pretending. NOTHING ABOUT YOU LEAVES YOUR DEVICE No servers of ours. A book from a catalogue or a page you save comes straight from where it lives, and sync, if you want it, goes through your own iCloud and nowhere else. DURI PRO One purchase, once, shared with your family: unlimited listening, iCloud sync, ten more themes and five accents, your own fonts, quote cards and PDF export of your notes. It costs US$9.99 (the App Store shows the price in your country), is paid once and never renews: it is not a subscription. Everything else is free, and stays free. Terms of use: https://duri.neeraj.ca/terms.html Privacy policy: https://duri.neeraj.ca/privacy.html
Screenshots
Verdict
The clearest difference is update cadence: Duri at daily against Bibooks's every 4 weeks. Duri also leads on device support (3 vs 1). Bibooks's advantage is iOS requirement (17 vs 26.0). On price, ads and in-app purchases 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
Both are free to download. Bibooks sells 1 one-off in-app purchase and Duri sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Bibooks ships an update every 4 weeks, Duri daily. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.
| Parameter | Bibooks | Duri |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 weeks | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17 — better | 26.0 |
| Further details — not scored | ||
| Size | 2 MB | 247 MB |
| Age rating | 12+ | 4+ |
| Developer | ilyas YILMAZ | NEERAJ SHARMA |
In-app purchases
Bibooks
- Sınırsız$1.99
Duri
- Duri Pro$9.99








