Comparison

PDF Reader vs Fill and Sign

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

Fill and Sign

Easily fill out and digitally sign any PDF document on your mobile device. Scan or import documents, use smart autofill for quick data entry, and add your signature to complete forms in seconds. Share finished files securely.

Highlights
  • Fill and sign PDF documents
  • Scan and import documents
  • Smart AI autofill suggestions
  • Digital signature creation
  • Secure data encryption
  • Offline functionality
Read full description

FILL & SIGN FORMS IN SECONDS Fillrr makes it simple to complete and eSign documents on your iPhone or iPad. Import or scan any PDF, edit and autofill forms instantly. Add your digital signature, and share the finished file in just moments. THE COMPLETE PDF FORM FILLER & SIGNATURE APP Stop wasting time with tiny keyboards or clunky apps. With Fillrr’s smart AI autofill, you can quickly: • Fill out contracts and agreements • Sign tax forms and legal documents • Complete applications and registration forms • eSign any PDF or scanned document HOW IT WORKS 1. Import a document: scan, share from your computer, or open an email attachment 2. Tap a field and edit your document — Fillrr adjusts fonts, checkboxes, and signature for you 3. Share or save your completed form instantly FAST, SIMPLE, AND SECURE • Autofill suggestions save you time • Digital signature maker allows you to eSign your form fast • Works offline with local data storage • Military-grade 256-bit AES encryption keeps your information safe WHY USERS CHOOSE FILLRR • Fast, accurate PDF editor and signer • Simple design that makes paperwork easy • Works with all types of documents • Always improving — let us know if a form doesn’t fill, and we’ll update Fillrr Edit, fill, sign, and send documents with Fillrr — the fast and simple PDF filler and signer. Privacy Policy: https://www.fillrr.com/privacy-policy Terms of Use: https://www.fillrr.com/terms-and-conditions

Screenshots

PDF Reader4 screens
Fill and Sign4 screens

Verdict

The call

The clearest difference is ads: PDF Reader at none against Fill and Sign's shown. PDF Reader also leads on ratings volume (3.5K vs 97) and review sentiment (81% vs 69%). Fill and Sign's advantage is rating (4.7 vs 4.5) and update cadence (monthly vs every 2 months). 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 Fill and Sign sells 5 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Fill and Sign holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: PDF Reader has 3.5K ratings behind it against 97, so its average is the more settled of the two. Written reviews complicate that: 81% of PDF Reader's written reviews are positive against 69% of Fill and Sign'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, Fill and Sign monthly. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

Scorecard6 real differences · 4 level
PDF Reader versus Fill and Sign: the parameters behind the verdict, then further details
ParameterPDF ReaderFill and Sign
PriceFreeFree
Rating4.5 (3.5K ratings)4.7 (97 ratings) — better
Positive reviews80.9% of reviews — better68.8% of reviews
Number of ratings3.5K — better97
Update frequencyEvery 2 monthsMonthly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS13.0 — better15.0
Further details — not scored
Size190 MB35 MB
Age rating4+4+
DeveloperKdan Mobile Software LTDFillrr LLC

Customer experience

PDF Reader

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

Fill and Sign

All ratings97 ratings
Positive91.8%
Neutral2.1%
Negative6.2%
Written reviews16 reviews
Positive68.8%
Neutral0.0%
Negative31.3%

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

Fill and Sign

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
5 purchases

Fill and Sign

Subscriptions5
  • Weekly renewable subscription$9.997 Days
  • Monthly renewable subscription3 Days trial$9.991 Month
  • Secret offer1 Year trial$39.991 Year
Show 2 more
  • One Time Offer1 Year trial$39.991 Year
  • Annually subscription3 Days trial$39.991 Year

Questions

Is PDF Reader free?
PDF Reader is free to download, with in-app purchases available.
Is Fill and Sign free?
Fill and Sign is free to download, with in-app purchases available.
Which has better reviews, PDF Reader or Fill and Sign?
Fill and Sign is rated higher. PDF Reader averages 4.5 out of 5 from 3.5K ratings, while Fill and Sign averages 4.7 from 97 ratings.
Do PDF Reader or Fill and Sign have ads?
Fill and Sign shows ads; PDF Reader does not.
Which is updated more often, PDF Reader or Fill and Sign?
PDF Reader ships an update every 2 months, and Fill and Sign monthly. Most recently, PDF Reader was updated on September 24, 2026 and Fill and Sign on September 18, 2026.

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