Duet: PDF Reader

Turn PDFs into Decisions.

Free · In‑App Purchases

Read closed. Think open. Your first two PDFs are free, with Canvas, Apple Pencil and private AI. Duet Pro unlocks unlimited PDFs, every theme and widgets. Read closed. Think open. Duet is a PDF reader for people who need to make sense of what they read. Highlight a passage and it becomes a card on a Canvas beside the page. Group your cards, connect them, add notes and questions, and work out what you think. Leave and come back later, and you're on the line you left. Now on iPhone, iPad and iPhone Duo. FREE TO START Your first two PDFs are free, each with its Canvas, Apple Pencil, private AI and the iPhone Duo layouts. No trial clock and no account. DUET PRO One purchase unlocks: • Unlimited PDFs, each with its own Canvas • All six themes • Home Screen and Lock Screen widgets Pay once and keep it. No subscription. Pro works on every iPhone, iPad and iPhone Duo signed in to the same Apple Account. THE CANVAS Every highlight arrives as a card, linked to its page. On the Canvas you can: • Clip passages straight from your PDF • Add sticky notes and text • Group and connect ideas with shapes and arrows • Lay out numbers in tables • Add photos from your library • Draw with your finger, or with Apple Pencil on iPad • Record voice notes, transcribed on your device so you can search them PRIVATE AI Ask about a passage, a card or a group of cards, and pin the answer to your Canvas. Answers come from your document and show the pages they came from. Duet uses Apple Intelligence on your device, so it works without internet, even on a flight, and your document stays with you. For bigger questions across a whole report, you can let Duet use Apple's Private Cloud Compute in Settings. It's only used when you're online. AI features need a device that supports Apple Intelligence. ON IPHONE DUO Read with the phone closed. Open it, and the page and its Canvas sit side by side. Half-folded like a book or flat on a table, the layout changes and every feature stays. Close it and you're back on the line you left. ON IPAD AND IPHONE iPad gives the Canvas the most room. Write and draw with Apple Pencil, and use Scribble to turn handwriting into text. On iPhone, the page and its Canvas are one tap apart. On iPad and iPhone Duo, open two reports side by side in Split View. WIDGETS (DUET PRO) For your Home Screen and Lock Screen: • Continue Reading opens the line you left. The larger sizes show your latest highlights too. • Recents shows your latest documents. • Latest Highlights shows recent passages from all your PDFs. SIX THEMES Ink & Paper is free. Studio Green, Studio Black, Tapestry, Cyanotype and Dawn come with Duet Pro. Each one changes the background, cards, highlight colour and app icon. YOUR LIBRARY Each PDF shows its page count and how many highlights you've made. Import from Files, Mail and Safari. Free to download. Duet Pro is a one-time in-app purchase. No subscription, no account, no ads. If anything's unclear, or something isn't working, get in touch: deepanshi@consciousengines.com Privacy Policy: https://duetreader.app/privacy Terms of Use: https://duetreader.app/terms

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Duet now has Duet Pro. • Your first two PDFs are free, with Canvas, Apple Pencil and private AI. • Duet Pro unlocks unlimited PDFs, all six themes and widgets. Pay once, no subscription. • Bought Pro on another device? Open Settings and tap Restore Purchases.

Version 1.2

The developer, Conscious Engines, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
Stackr Labs Inc.
Size
32.4 MB
Category
Productivity
Compatibility
Requires iOS 27.0 or later.
  • iPhone
    Requires iOS 27.0 or later.
  • iPad
    Requires iPadOS 27.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Stackr Labs Incorporated
  • Developer Website
  • Privacy Policy

    • More by Conscious Engines

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