Comparison

Acrobat Reader vs Fill & Sign PDF Documents App

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

Head to head
About

Acrobat Reader

This app is a powerful PDF tool for viewing, editing, annotating, and signing documents. It offers AI-powered features for summarizing and interacting with PDFs, along with robust conversion and security options. Collaborate on files and access your documents from anywhere.

Highlights
  • View, edit, and annotate PDFs
  • Sign and fill PDF forms
  • Convert files to and from PDF
  • AI-powered document summarization
  • Collaborate in PDF Spaces
  • Compress and secure PDFs
  • Optical Character Recognition (OCR)
Features
Read full description

Major new updates: Collaborate and share your files in PDF Spaces, and turn your document summaries into podcast-style audio in Acrobat Studio. The world’s most trusted PDF reader, PDF editor, and PDF maker with more than 635 million installs. View, share, annotate, add comments, and sign documents - all in one app. You can store your files online and read documents anywhere. Get your 7-day free trial and try all the features of Acrobat Reader. Paid features: Adobe Acrobat AI Assistant • Work across multiple files in one place with PDF Spaces. Collaborate, store, and use AI Assistant across files • Use voice or text prompts with AI Assistant chatbot • Ask questions and get cited answers about details in your document, including charts, graphs, and tables with Figures Q&A • Easily share the responses you get • Try voice support to ask queries and have answers read aloud. • Use new Hands-free to keep the conversation flowing with voice only • Instantly generate summaries from your PDFs with Generative AI Summaries • Get content for emails, text, study notes, blogs, and more [Adobe Acrobat AI Assistant is a paid feature*, free for a limited time] Edit PDFs • With our PDF editor, edit text and images directly in your PDF (mobile only) • Fix typos or add paragraphs with the PDF editor • Easily add, delete, or rotate any image • Use this PDF signer and PDF viewer to get your docs just right Recognize text • Optical Character Recognition (OCR) turns scanned PDFs into searchable, editable text to use in other formats Merge & organize PDFs with PDF Converter • Split or combine multiple files into one PDF with PDF converter • Use the PDF editor to insert, delete, rotate, crop & reorder pages in your PDF file Create, convert & export PDFs • Easily convert to PDF from any file type including Microsoft, Google Docs, and images • Export and convert PDFs to Microsoft Word, Excel, PowerPoint, or various image files • Convert web pages to PDFs Compress & highly secure PDFs • Compress PDF files for easy saving and sharing • Password Protect PDF documents Have your PDF read aloud • Listen to your PDFs on the go, great for reading support • Choose free voices or upgrade for high-quality options Subscribe now to access all these features and use Acrobat across mobile and web platforms. Free-to-use features: PDF signer: Fill & Sign Adobe Fill & Sign is free & available in Acrobat Reader. A form filler and PDF signer that lets you fill, sign, and send Liquid mode in the optimal PDF viewer • Get the best PDF reading experience with this PDF viewer • Search, navigate & adjust font size or spacing to fit your screen Annotate PDFs • Add sticky notes, comments, and highlight text Store & manage files • Link online storage accounts like Microsoft OneDrive, Dropbox, or Google Drive • Star files to quickly open important documents Connect the PDF viewer and reader to Google Drive • A PDF creator that lets you edit, compress, and export Google Drive files with a subscription Work with scanned documents • Access scanned PDFs from Adobe Scan in Acrobat to fill, sign, and share The Acrobat Reader mobile app is designed to work with customers who have Enterprise Mobility Management (EMM) enabled. *An Adobe Acrobat AI Assistant add-on plan is available to Acrobat Individual customers. iOS 16 or above required. Terms & Conditions: Your use of this application is governed by the Adobe General Terms of Use http://www.adobe.com/go/terms_linkfree_en and the Adobe Privacy Policy http://www.adobe.com/go/privacy_policy_linkfree_en Do not sell or share my personal information www.adobe.com/go/ca-rights-linkfree

About

Fill & Sign PDF Documents App

Easily sign and import any document using your phone. Create your electronic signature with your finger and apply it to forms. This tool transforms your device into a powerful digital signing solution.

Highlights
  • Edit and fill out documents
  • Create electronic signatures
  • Sign documents easily
  • Import documents
Features
Read full description

The app enables you to sign and import any document seamlessly. Transform your Phone into a powerful tool for electronic signing. Simply create your signature with your finger and apply it or your initials to any form. Give it a try today! Features: — Edit and fill out documents — Create an electronic signature — Sign documents easily — Import documents effortlessly Subscription Information: - Payment will be charged to your iTunes Account upon confirmation of purchase. - Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. - Your account will be charged for renewal within 24 hours before the end of the current period. - You can manage subscriptions and turn off auto-renewal at any time in your Account Settings after purchase. Privacy Policy: https://docs.google.com/document/d/16su5qCNwT6t04VZGl0Gg-xSZAzo7na1m2VIzdgSTzDM/ Terms of Use: https://docs.google.com/document/d/1pv0VuBDYvjcFgWa567Xfk3nsDFmY9GKKpE_rOZaLDhQ/

Screenshots

Acrobat Reader4 screens
Fill & Sign PDF Documents App4 screens

Verdict

The call

Acrobat Reader and Fill & Sign PDF Documents App both sit at 4.6 stars, but that hides the real split: 100% of Fill & Sign PDF Documents App's written reviews are positive against 49% of Acrobat Reader's. Fill & Sign PDF Documents App also leads on update cadence (daily vs every 9 days) and iOS requirement (16.0 vs 18.3). Acrobat Reader's advantage is ratings volume (654K vs 11) and chart position (#2 vs unranked). On price, rating, ads and in-app purchases 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. Acrobat Reader sells 16 in-app purchases, starting at $3.99 per month and Fill & Sign PDF Documents App sells 1 in-app purchase, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Acrobat Reader against 4.5 for Fill & Sign PDF Documents App. That said, the two scores are not equally well evidenced: Acrobat Reader has 654K ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 49% of Acrobat Reader's written reviews are positive against 100% of Fill & Sign PDF Documents App's.

UpkeepUpdate frequency

Acrobat Reader ships an update every 9 days, Fill & Sign PDF Documents App daily. The most recent releases landed on September 25, 2026 and September 14, 2026 respectively.

Scorecard5 real differences · 6 level
Acrobat Reader versus Fill & Sign PDF Documents App: the parameters behind the verdict, then further details
ParameterAcrobat ReaderFill & Sign PDF Documents App
PriceFreeFree
Rating4.6 (654K ratings) — better4.5 (11 ratings)
Positive reviews49.1% of reviews100.0% of reviews — better
Number of ratings654K — better11
Update frequencyEvery 9 daysDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
Best chart rank#2 — better—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.316.0 — better
Further details — not scored
Size522 MB13 MB
Age rating4+4+
DeveloperAdobe Inc.Jay Clauer

Customer experience

Acrobat Reader

All ratings654,141 ratings
Positive91.4%
Neutral2.4%
Negative6.2%
Written reviews3,152 reviews
Positive49.1%
Neutral4.4%
Negative46.5%

Fill & Sign PDF Documents App

All ratings11 ratings
Positive90.9%
Neutral0.0%
Negative9.1%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Acrobat Reader

Reported bugs

4 issues
  • Frequent crashes and freezes
  • Inconsistent behavior when editing PDFs
  • Inability to open or save certain file types
  • Sync issues between mobile and desktop versions

Requested features

5 requests
  • Add erase tool for annotations
  • Improve palm rejection for Apple Pencil
  • Allow direct text editing in PDFs
  • Provide better cloud integration and sync
  • Offer more customization options

Fill & Sign PDF Documents App

Not enough reviews yet to summarise bugs or requests.

In-app purchases

16 purchases

Acrobat Reader

Subscriptions16
  • Acrobat Premium - Monthly$3.991 Month
  • Adobe Acrobat Premium$4.991 Month
  • AI Assistant for Acrobat$6.991 Month
Show 13 more
  • Acrobat Premium$7.497 Days
  • Acrobat Premium - Monthly$9.991 Month
  • Acrobat Premium - Weekly$9.997 Days
  • PDF Pack - Doc Creator$9.991 Month
  • Premium - Edit & Create PDF$9.991 Month
  • PDF Edit and Convert Monthly7 Days trial$12.991 Month
  • Acrobat Premium - Monthly$12.991 Month
  • Acrobat Premium - Monthly$14.991 Month
  • Acrobat Reader Plus - Yearly$19.991 Year
  • Adobe ExportPDF$23.991 Year
  • Adobe Acrobat Pro$24.991 Month
  • Acrobat Premium - Yearly7 Days trial$48.991 Year
  • Acrobat Premium - Yearly7 Days trial2 variants$69.991 Year
1 purchases

Fill & Sign PDF Documents App

Subscriptions1
  • Access to additional functions3 Days trial$6.997 Days

Questions

Is Acrobat Reader free?
Acrobat Reader is free to download, with in-app purchases available.
Is Fill & Sign PDF Documents App free?
Fill & Sign PDF Documents App is free to download, with in-app purchases available.
Which has better reviews, Acrobat Reader or Fill & Sign PDF Documents App?
Acrobat Reader is rated higher. Acrobat Reader averages 4.6 out of 5 from 654K ratings, while Fill & Sign PDF Documents App averages 4.5 from 11 ratings.
Do Acrobat Reader or Fill & Sign PDF Documents App have ads?
Neither Acrobat Reader nor Fill & Sign PDF Documents App shows ads.
Which is updated more often, Acrobat Reader or Fill & Sign PDF Documents App?
Acrobat Reader ships an update every 9 days, and Fill & Sign PDF Documents App daily. Most recently, Acrobat Reader was updated on September 25, 2026 and Fill & Sign PDF Documents App on September 14, 2026.

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