Knut Book Scanner

Scan Pages, Build Your Library

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Scan two book pages at once with your iPhone. Smart auto-capture detects when to shoot, instant PDF, zero data collection. Try 500 pages free — unlock all for $2.99. Knut: Book Scanner & PDF turns your iPhone into a fast, privacy-first book scanner. Place your book on a scanning stand, and the app captures two pages at once, splits them automatically, and generates a ready-to-share PDF — all without touching the cloud. BUILT FOR READERS WHO VALUE PRIVACY Every image you capture, every PDF you create, and every setting you choose stays on your device. No accounts. No cloud uploads. No analytics. No ads. We do not collect a single byte of your data. HOW IT WORKS 1. Place your book on a scanning stand and position your iPhone above it. 2. Tap capture — or enable smart auto-capture to scan hands-free. The app detects when a page is ready and captures automatically. 3. When you stop scanning, your pages are assembled into a PDF automatically. Share it anywhere with one tap. KEY FEATURES - Two Pages Per Capture — Photograph an open book and the app splits the image into individual pages automatically. One shot, two pages, every time. - Smart Auto-Capture — Powered by Vision-based document detection. The app recognizes when a page is settled and captures automatically — no fixed timers. A live confidence overlay shows green when the page is ready, amber while settling, and hides during page turns — so you always know when the next capture will fire. A configurable capture pause lets you turn pages at your own speed, and a fallback timer ensures no page is missed. - Adjustable Crop with Mirror Symmetry — Set your crop rectangle once and fine-tune it to frame your pages. Mirror symmetry applies the same adjustment to both pages — one setting, two perfect crops. - Zoom & Torch Control — Adjust camera zoom to frame your scanning stand perfectly. Toggle the torch for consistent lighting in any environment. - Instant PDF Generation — Your scanned pages become a shareable PDF the moment you stop scanning. No extra steps, no conversion waiting. - PDF Library — Browse, rename, sort, and preview all your scanned books in one place. Multi-select to share or export multiple PDFs at once. - Three Quality Presets — Choose High (maximum detail), Normal (balanced), or Compact (smallest file size) depending on your needs. - 66+ Languages — Use the app in your language. From Arabic to Vietnamese, Knut supports over 66 languages out of the box. - 100% Offline — Works without an internet connection. Your library is always accessible, wherever you are. SIMPLE PRICING Try the full app with 500 free pages. If you like it, unlock unlimited scanning for $2.99 — one-time, no subscription. All future updates included. PERFECT FOR - Students digitizing textbook chapters and lecture handouts - Researchers archiving journal articles and reference material - Book lovers preserving personal libraries - Professionals scanning manuals, contracts, and reference documents - Anyone who needs book pages in PDF without a flatbed scanner Download Knut: Book Scanner & PDF and start building your digital library today.

Ratings & Reviews

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The developer, Jussi Rajaniemi, 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 Collected

    The developer does not collect any data from this app.

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

    The developer indicated that this app supports the following accessibility features. Learn More

    • Supported Features

      • VoiceOver

      • Voice Control

      • Larger Text

      • Dark Interface

      • Differentiate Without Color Alone

      • Sufficient Contrast

    For more information, visit the developer’s accessibility website .

    Information

    Seller
    • Jussi Rajaniemi
    Size
    • 3.1 MB
    Category
    • Productivity
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 64 more
    • English, Afrikaans, Albanian, Arabic, Azerbaijani, Basque, Bengali, Bosnian, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, Galician, Georgian, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Irish, Italian, Japanese, Kannada, Kazakh, Korean, Latvian, Lithuanian, Macedonian, Malay, Malayalam, Marathi, Nepali, Norwegian Bokmål, Persian, Polish, Portuguese, Punjabi, Romanian, Russian, Serbian, Simplified Chinese, Slovak, Slovenian, Spanish, Swahili, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Uzbek, Vietnamese, Welsh
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Jussi Rajaniemi
  • Developer Website
  • Privacy Policy

    • More by Jussi Rajaniemi