Comparison

PDF Reader vs PDF Scan Document

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PDF Reader

Edit, convert, and manage PDF documents on your mobile device. This app allows you to directly edit text, scan documents, fill out forms, and secure your files with passwords and watermarks. It also supports OCR to extract text from scans and convert PDFs to various formats.

Highlights
  • Edit PDF text directly
  • Convert PDF to Word, Excel, PPT, images
  • OCR for text extraction from scans
  • Fill and sign PDF forms
  • Secure PDFs with passwords and watermarks
  • Annotate PDFs with highlights and notes
  • Merge and split PDF files
Features
Read full description

KDAN PDF, formerly KDAN PDF Reader, is a mobile PDF editor and reader for iPhone, iPad, and Mac. Edit text directly on your device. Then scan, organize, convert, sign, and share your PDFs in one simple and powerful app. Trusted by millions, KDAN PDF connects your workflow across iPhone, iPad, and Mac, making it easy to review, annotate, and finalize documents anywhere. Who Recommends Us? - Featured as “10 Essentials” in Utility on iTunes - Featured in “10 Best PDF Reader Apps For iPhone & iPad 2019” by FOSSBYTES - Featured as “Best Utility App” in App Store Rewind KEY FEATURES PDF EDITOR • Edit and correct any typos directly on PDFs • Merge multiple files into one PDF • Split a large PDF into several small PDFs • Rotate, delete, add, and rearrange pages • Extract pages or images from PDFs • Change PDF background color PDF CONVERTER • Online & Offline PDF converter • Convert PDF to Word, Excel, PPT & image conversions (docx, xlsx, pptx, jpg, png, gif & bmp). • Save webpages and images as PDFs OCR (Optical Character Recognition) • Recognize and extract text from scans • Export OCR results as text or searchable PDFs • Support 50+ languages SIGN, FORM FILLING, SHARE • Fill out & edit PDF forms • Sign on PDFs • Customize and manage signatures SHARE FILES • Get files from KDAN Cloud, iCloud Drive, Dropbox, OneDrive, Google Drive, Evernote, FTP, or WebDAV client • Compress PDFs • Share flatten PDFs • Send faxes directly from within the app PDF SECURITY • Add passwords to lock PDFs • Remove passwords & restrictions from PDFs • Add & remove PDF watermarks • Validate certificates & signatures in PDF documents VIEW FILES • Supports all mainstream file formats, including Vitrium* PDF format (Like University of Phoenix Ebooks) • Text Reflow & Auto Flow • Present a PDF as a slideshow • View multiple PDFs as tabs • Dark mode supported (only for iOS13 & macOS Mojave and later) • Convert text to spoken audio (text-to-speech) ANNOTATE & REVIEW PDF • Annotate PDFs with highlights, underlines, strikeout text, shapes, sticky notes & text boxes • Add pre-designed stamps, including Approved, Sign Here, Confidential, and more • Add custom stamps with time and date information • Insert hyperlinks to external websites, target pages, and email address • Attach audio notes & insert images to PDFs • Turn handwriting into text with Scribble (Available for iPad) • Add handwritten notes to PDFs MANAGE ANNOTATIONS • Save annotations in XFDF format • Remove all annotations in one tap - Recommended by Techradar, Techworm & Softsonic UPGRADE OPTIONS DOCUMENT 365 • Try for $0.00 for 7 days • Access KDAN PDF on Mac, iPhone, iPad, and other platforms. • Annual plan: billed at USD 59.99/year after the 7-day free trial ends • Quarterly plan: billed at USD 19.99/quarter after 3-day free trial ends • Monthly plan: billed at USD 9.99/month after 3-day free trial ends Subscriptions will be charged to your Apple account upon purchase and will auto-renew 24 hours before the current period ends at the same price and duration. Cancellation during the active period is not allowed. Manage your trial and subscription in your Apple account. Terms of service: https://pdf-reader.kdandoc.com/terms-of-service Privacy Policy: https://pdf-reader.kdandoc.com/privacy-policy Got a question? Contact us at helpdesk@kdanmobile.com or check out https://support.kdanmobile.com

About

PDF Scan Document

Transform your device into a powerful mobile scanner. Quickly capture, edit, and share documents, receipts, and notes as PDFs or JPGs. Features include live text scanning, OCR, and signature addition.

Highlights
  • Live text scanning with AI
  • OCR for text extraction
  • Document editing and reordering
  • Signature addition
  • Convert various file types to PDF/JPG
  • Import from Photos and Files
Features
Read full description

Quickly scan, edit and share any document as a PDF or JPG file. PDF Scanner App will turn your iPhone or iPad into a powerful mobile scanner. Scan anything — documents, receipts, business cards, notes, and books — and save your scans as multipage PDF or JPG files. SCAN: - LIVE scan text on Image, Camera with AI - LIVE Translate any language on Image, Camera with AI - Scan any document automatically or manually and save it as a PDF file or image. - Try various Camera Modes to scan specific types of documents. - Import documents right from Photos, Files for further editing and sharing. - Choose between the automatic or manual image capturing modes. EDITS: - Re-crop scans, change page perspective and borders, apply filters, adjust contrast, and correct or change the orientation. - Organize and reorder pages in multipage documents. - Highlight the key points of your scans or Note. - Add Signature. Create and save one or more signatures, and add them to scans whenever you need. - Recognize and extract text from your scans with OCR (Optical Character Recognition) technology. CONVERT:  - Convert any file: doc, docx, xls, xlsx, ppt, pptx, txt, csv, html, gif, tiff... to PDF or JPG file. Subscription Info • Free trial • Weekly, monthly and annual payment options • Unlock all features • No ads Any unused portion of the Free Trial will be forfeited when You purchase a subscription. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless autorenewal is turned off at least 24 hours before the end of current period. Payment for renewal is charged within 24 hours prior to the end of the current period. You can manage Your subscription and turn off the autorenewal by going to Your Account Settings after purchase. Terms & Privacy: https://koolappstore.blogspot.com/p/privacy-personal-information-we-do-not.html Thanks for comment! Support: appbibo@gmail.com

Screenshots

PDF Reader4 screens
PDF Scan Document4 screens

Verdict

The call

The clearest difference is rating: PDF Reader at 4.5 against PDF Scan Document's 4.0. PDF Reader also leads on ads (none vs shown) and ratings volume (3.5K vs 3). PDF Scan Document's advantage is review sentiment (100% vs 81%). On price, in-app purchases, monetization model and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PDF Reader sells 10 in-app purchases, starting at $2.99 per month and PDF Scan Document sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PDF Reader holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: PDF Reader has 3.5K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 81% of PDF Reader's written reviews are positive against 100% of PDF Scan Document's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

PDF Reader ships an update every 2 months, PDF Scan Document every 8 months. The most recent releases landed on October 2, 2026 and June 1, 2026 respectively.

Scorecard6 real differences · 4 level
PDF Reader versus PDF Scan Document: the parameters behind the verdict, then further details
ParameterPDF ReaderPDF Scan Document
PriceFreeFree
Rating4.5 (3.5K ratings) — better4.0 (3 ratings)
Positive reviews80.9% of reviews100.0% of reviews — better
Number of ratings3.5K — better3
Update frequencyEvery 2 months — betterEvery 8 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size190 MB46 MB
Age rating4+4+
DeveloperKdan Mobile Software LTDDao Thang

Customer experience

PDF Reader

All ratings3,542 ratings
Positive89.2%
Neutral2.7%
Negative8.2%
Written reviews2,194 reviews
Positive80.9%
Neutral4.8%
Negative14.3%

PDF Scan Document

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

PDF Reader

Reported bugs

3 issues
  • Unable to open or access saved files
  • Syncing and backup issues
  • Compatibility problems with newer iOS versions

Requested features

4 requests
  • Improved file management and organization
  • Better integration with cloud storage services
  • More customization options
  • Enhanced accessibility features

PDF Scan Document

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

PDF Reader

Subscriptions9
  • KDAN Cloud$2.991 Month
  • Deluxe Business Pack$5.991 Month
  • Creativity 3653 Days trial$9.991 Month
Show 6 more
  • Document 365 (Month)3 Days trial$9.991 Month
  • Deluxe PDF Pack for iPhone$12.993 Months
  • Creativity 365 - 3 Months3 Days trial$19.993 Months
  • Document 365 (Quarter)3 Days trial$19.993 Months
  • Deluxe PDF Pack for iPhone$39.991 Year
  • Document 3657 Days trial$59.991 Year
One-time1
  • Upgrade to Premium$2.99
3 purchases

PDF Scan Document

Subscriptions3
  • A Week All Feature & No Limits$2.997 Days
  • A Month All Feature, No Limits7 Days trial$5.991 Month
  • A Year All Feature & No Limits$19.991 Year

Questions

Is PDF Reader free?
PDF Reader is free to download, with in-app purchases available.
Is PDF Scan Document free?
PDF Scan Document is free to download, with in-app purchases available.
Which has better reviews, PDF Reader or PDF Scan Document?
PDF Reader is rated higher. PDF Reader averages 4.5 out of 5 from 3.5K ratings, while PDF Scan Document averages 4.0 from 3 ratings.
Do PDF Reader or PDF Scan Document have ads?
PDF Scan Document shows ads; PDF Reader does not.
Which is updated more often, PDF Reader or PDF Scan Document?
PDF Reader ships an update every 2 months, and PDF Scan Document every 8 months. Most recently, PDF Reader was updated on October 2, 2026 and PDF Scan Document on June 1, 2026.

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