Knut Book Scanner vs ScanLeap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Knut Book Scanner
Read full descriptionHide full description
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.
ScanLeap
Transform your mobile device into a powerful document scanner and PDF converter. Easily capture, organize, and share documents, receipts, and more as clear PDFs or images. Convert various file types and combine multiple documents into a single file.
- Auto-capture page edges
- Single and batch scanning (up to 30 pages)
- Save as PDF or image
- Multiple scan filters
- Convert Word/PPT to PDF
- Combine multiple PDFs
- Organize, search, and share files
Read full descriptionHide full description
ScanLeap: Smart Document Scanner, PDF Converter Turn your iPhone or iPad into a powerful document scanner and PDF converter. Scan documents, receipts, invoices, notes, books, assignments, business cards, forms, certificates and more in seconds. Create clear PDFs or pictures, convert and combine files, organize your scans, and share them wherever you need. WHY CHOOSE SCANLEAP? - Auto-capture that finds the page edges for you - Single-page and batch scanning (up to 30 pages) - Save scans as PDF or pictures - Filters: Magic, Enhance, No Shadows, Grayscale, B&W - Convert images to PDF and PDF to images - Convert Word (DOC/DOCX) and PowerPoint (PPT/PPTX) to PDF - Combine multiple PDFs into one - Organize, search and share your files - Sign in with Apple or Google SMART DOCUMENT SCANNER Hold your phone over a page and ScanLeap detects the edges, waits for a steady shot and captures automatically. Scan a single page, or scan a batch of up to 30 pages into one document. CLEANER SCANS Choose the filter that suits your page. No Shadows lifts shadows from your hand, phone, pens and cables. Magic keeps pen ink in colour while whitening the paper. Enhance, Grayscale and B&W make text sharp and easy to read. CONVERT FILES - Image to PDF: turn one or more photos into a single PDF - PDF to images: save every page as a JPG - Word to PDF: convert DOC and DOCX documents - PowerPoint to PDF: convert PPT and PPTX presentations Your original files always stay untouched. COMBINE PDF FILES Join several PDFs into one organized document. Preview the pages and remove any you don't need before saving. ORGANIZE YOUR DOCUMENTS All your scans and converted files live in one place. Search, filter by type, rename and share in a few taps. SHARE ANYWHERE Share your PDFs and pictures through Mail, WhatsApp, Files, Google Drive, Dropbox, OneDrive and more. FREE TO USE Watch a short rewarded ad to scan: one ad for a single page, two ads for a batch of up to 30 pages. No subscription required. SCAN MORE THAN PAPER - Receipts and bills - Invoices and contracts - Notes and books - Assignments - Certificates - Business cards and ID cards - Forms and office documents PERFECT FOR Students: digitize notes, assignments, books and study materials. Professionals: scan business documents, invoices, contracts and paperwork. Freelancers and small businesses: keep important documents organized and ready to share. Teachers and office workers: quickly turn paper documents into digital PDFs. Real estate agents, accountants and lawyers: manage paperwork wherever you work. Available in English, Arabic, French, Italian and Portuguese. SIMPLE. FAST. POWERFUL. Scan. Convert. Combine. Organize. Share. Download ScanLeap and turn your everyday documents into professional digital files in seconds.
Screenshots
Verdict
The clearest difference is in-app purchases: ScanLeap at none against Knut Book Scanner's 1. ScanLeap also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). Knut Book Scanner's advantage is ads (none vs shown). On price, rating and ratings volume 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. Knut Book Scanner sells 1 one-off in-app purchase. ScanLeap asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Knut Book Scanner against 5.0 for ScanLeap. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
| Parameter | Knut Book Scanner | ScanLeap |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | — | Every 10 days |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | — | Ad-supported |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 3 MB | 131 MB |
| Age rating | 4+ | 4+ |
| Developer | Jussi Rajaniemi | CDOXS (PRIVATE) LIMITED |
In-app purchases
Knut Book Scanner
- Full Version$2.99
ScanLeap
No in-app purchases









