Comparison

PDF Reader vs PDFlexor

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

PDFlexor

Edit, convert, and organize PDF documents with a secure, all-in-one toolkit. Features include merging, splitting, page reordering, and conversion to various formats, with most operations processed locally for enhanced privacy.

Highlights
  • Merge and split PDF files
  • Extract, delete, and reorder pages
  • Convert PDFs to/from various formats
  • Crop and resize PDF pages
  • Compress PDF file size
  • Local processing for enhanced security
Features
Read full description

Master Your PDFs with Our Comprehensive Toolkit PDFlexor empowers you to effortlessly edit, convert, and manage your PDF documents with a comprehensive suite of features. Whether you need to merge, split, extract pages, reorder, rotate, convert, or crop PDFs, this app ensures your documents are handled with the utmost security. Local Processing for Maximum Security: Most PDF operations, such as merging, splitting, extracting, and deleting pages, are processed locally on your device. This design principle ensures that your sensitive documents never leave your device, providing an extra layer of security and privacy. No need to worry about external breaches or unauthorized access, as your documents remain under your sole control. Secure Office Conversions: For Office-related conversions (PDF to Word, Excel, PowerPoint, and vice versa), our app takes extra precautions. Files are securely uploaded to our server for processing. We employ state-of-the-art encryption and adhere to strict privacy policies to protect your data during transmission and processing. Once the conversion is complete, files are immediately deleted from our servers, ensuring that your information remains confidential and secure. Key Features: Organization: Merge PDFs: Combine multiple PDF files into a single, organized document. Split PDFs: Divide large PDFs into smaller, more manageable files based on specific page ranges. Extract Pages: Isolate and save specific pages from a PDF into a new document. Delete Pages: Remove unwanted pages from your PDFs permanently. Add Page Numbers: Enhance your documents by adding page numbers for easy reference. Reorder Pages: Rearrange the sequence of pages in your PDF to fit your needs. Rotate Pages: Adjust the orientation of pages to ensure they are displayed correctly. Insert Pages: Add new pages into your existing PDFs at any position. Multi-page Layout: Create PDFs with multiple pages per sheet for compact viewing. Viewing and Editing: Crop PDF Pages: Trim or remove unwanted margins from your PDF pages. Resize Pages: Change the size of your PDF pages to standard formats like A4 or Letter. Compress PDF: Reduce the file size of your PDFs for easier sharing and storage. Edit Metadata: Modify or remove metadata to protect your privacy. Remove Blank Pages: Automatically detect and delete empty pages from your documents. Overlay PDF: Superimpose one PDF onto another for layered content. Compare PDF: Compare the differences between two PDF files. Conversion: PDF to Image: Convert PDF pages into image files. Extract Images: Retrieve all embedded images from your PDFs. Extract Text: Convert PDF content into editable text formats. Images to PDF: Convert a collection of images into a single PDF document. URL to PDF: Capture web content directly into a PDF format. SVG to PDF: Transform SVG graphics into PDF files. CSV to PDF: Convert tabular data from CSV into a PDF document. RTF to PDF: Convert rich text format files into PDFs. PDF to RTF: Convert PDF content into editable RTF files. PDF to Word/Excel/PowerPoint: Convert your PDFs into editable Office formats. GIF/Excel/Word/PowerPoint to PDF: Convert various file types into PDFs. Security: Sign PDF: Electronically sign your PDFs for a secure and efficient workflow. Protect PDF: Secure your PDFs with passwords to prevent unauthorized access. Unlock PDF: Remove password protection from PDFs you own. Add Watermark: Protect your documents with text or image watermarks. Redact PDF: Safeguard sensitive information by blacking out text. Experience the power, flexibility, and security of our All-in-One PDF App and simplify your PDF tasks today! Download now and unlock the full potential of your PDF documents, with peace of mind knowing that your privacy and security are our top priorities. Terms of Service: https://pdfinity.ultraifun.com/agreements/termsOfUser.html Privacy Policy: https://pdfinity.ultraifun.com/agreements/privacy.html

Screenshots

PDF Reader4 screens
PDFlexor4 screens

Verdict

The call

The clearest difference is rating: PDFlexor at 5.0 against PDF Reader's 4.5. PDFlexor also leads on update cadence (every 3 days vs every 2 months). PDF Reader's advantage is ratings volume (3.5K vs 1). On price, ads, in-app purchases and monetization model 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 PDFlexor sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PDFlexor holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: PDF Reader has 3.5K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

PDF Reader ships an update every 2 months, PDFlexor every 3 days. The most recent releases landed on September 24, 2026 and August 20, 2026 respectively.

Scorecard3 real differences · 7 level
PDF Reader versus PDFlexor: the parameters behind the verdict, then further details
ParameterPDF ReaderPDFlexor
PriceFreeFree
Rating4.5 (3.5K ratings)5.0 (1 ratings) — better
Positive reviews80.9% of reviews—
Number of ratings3.5K — better1
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size190 MB45 MB
Age rating4+4+
DeveloperKdan Mobile Software LTDHuizhou Jiqu Technology Co., Ltd.

Customer experience

PDF Reader

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

PDFlexor

All ratings1 ratings
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

PDFlexor

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
4 purchases

PDFlexor

Subscriptions3
  • Weekly Membership$1.997 Days
  • Monthly Membership$3.991 Month
  • Annual Membership$14.991 Year
One-time1
  • Life Membership$29.99

Questions

Is PDF Reader free?
PDF Reader is free to download, with in-app purchases available.
Is PDFlexor free?
PDFlexor is free to download, with in-app purchases available.
Which has better reviews, PDF Reader or PDFlexor?
PDFlexor is rated higher. PDF Reader averages 4.5 out of 5 from 3.5K ratings, while PDFlexor averages 5.0 from 1 ratings.
Do PDF Reader or PDFlexor have ads?
Neither PDF Reader nor PDFlexor shows ads.
Which is updated more often, PDF Reader or PDFlexor?
PDF Reader ships an update every 2 months, and PDFlexor every 3 days. Most recently, PDF Reader was updated on September 24, 2026 and PDFlexor on August 20, 2026.

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