Made for iPhone Duo

Fold it. It’s a cover.
Open it. It’s a book.

DuoPage turns every PDF, ePub and Word file into a real book — with a cover on the outer screen, two paper pages inside, and room to write in the margins.

Download on theApp Store Watch the film

Free to try · Works on every iPhone and iPad

iPhone Duo folded, showing a red cloth book cover on the outer display iPhone Duo opened like a book, two pages side by side

  1. Fold

    Your book’s cover waits on the outside, with a ribbon and how far you’ve read.

  2. Open

    Two paper pages, the spine right on the hinge. Text keeps clear of the fold.

  3. Write

    Highlight, underline and take notes with your finger or Apple Pencil.

A book for every file

Everything you read, on one quiet shelf

Not a foldable? DuoPage works on any iPhone and iPad — the cover greets you when you come back, and iPad shows two pages side by side.

The DuoPage shelf with colourful book covers on wooden shelves
Your shelf

Every file becomes a book

Add a document and it lands on your shelf with its own cover. Open it again and you’re right where you left off.

  • PDF, ePub (DRM-free), Word .docx, text, Markdown and saved web pages
  • Add from Files, iCloud Drive, Safari or Mail — or photos bound into an album
  • Separate shelves per class or project, and a spine view on a wooden shelf
  • Lock private books with Face ID
Highlighting and handwriting on two open pages
Write

Write like it’s paper

Pick up a highlighter, a pen or the eraser and mark up any page. Your notes travel with the book.

  • Highlighter, pens, eraser and ruler — finger or Apple Pencil
  • Type anywhere, add photos, stickers and page notes
  • Export a PDF with your markup to share with a teacher or colleague
  • Notebooks in plain, lined, grid, dot and school paper, plus diary and Cornell templates
Asking a question about a book, with an answer that cites its pages
Study

Ask your book — on device

Get a summary, ask a question and see which page the answer came from, or turn a chapter into flashcards.

  • Uses Apple Intelligence, or a free offline model you download once on other iPhones
  • Everything runs on your device; your documents never leave it
  • Search a book or your whole shelf, with or without accents
  • Text recognition for photos and scans, read aloud, look up and translate
Cover Studio with a grid of cover templates
Cover Studio

A cover for every book

Cloth, kraft, leather, marbled, watercolor, night sky — 14 hand-made templates you can make your own.

  • Change the color, choose from 7 typefaces, add an emblem or embossed lettering
  • Use the first page or your own photo as cover art
  • Share a “Reading now” card of what’s on your nightstand
The details

Made with care, down to the page sound

Pages that feel like paper

Page curl, a soft paper sound and a gentle tap. White, cream, sepia or night paper.

Home & Lock Screen widgets

Your current book’s cover and progress. Tap to open the right page.

Read aloud

Listen in the language of the page, with pages turning for you.

Text in photos and scans

Recognise text in images and scanned PDFs so you can search and select it.

Read & write

The document on one side, your notebook on the other.

Face ID for private books

Keep a diary or work files locked behind your face.

See it

35 seconds with DuoPage

Private by design

Your books stay on your device

Your documents and notes are stored privately on your iPhone and are never uploaded, and the AI features run on device. There are no accounts and no ads; DuoPage only collects anonymous usage statistics and crash reports to improve the app.

  • Books never uploaded
  • No accounts
  • No ads
  • On-device AI

Read the Privacy Policy →

Pricing

Pay once. Read forever.

Try every reading and note-taking feature for free. Upgrade when your shelf fills up.

Free

$0

  • Up to 3 books on your shelf
  • 5 cover templates
  • Two-page reader, markup and notebooks
  • Search, read aloud and study tools
Download on theApp Store

DuoPage Pro

One-time purchase

  • Unlimited books and shelves
  • All 14 covers and your own cover photos
  • Premium notebook templates
  • Every reading feature we add later
  • Family Sharing with up to five family members
Download on theApp Store

No subscription. The price for your country is shown in the App Store.

Questions

Do I need an iPhone Duo?

No. DuoPage is made for the two screens of iPhone Duo, but it works on any iPhone and iPad running iOS 18 or later. On a regular iPhone the cover appears when you return to the app; on iPad you can read two pages side by side.

What files can I read?

PDF, ePub without DRM, Word .docx, plain text, Markdown, HTML and web pages saved for offline reading. You can also bind photos from your library into an album.

Do the AI features send my books anywhere?

No. Summaries, questions and flashcards run on your device with Apple Intelligence, or with an offline model you choose to download on devices without it. Your documents are never uploaded.

Is Pro a subscription?

No. DuoPage Pro is a single in-app purchase that you keep forever, and it can be shared with your family through Family Sharing. If you reinstall, use Settings → Restore purchase.

More answers in Support →

DuoPage app icon

Your next book deserves a cover

Free on the App Store for iPhone and iPad.

Download on theApp Store