Comparison

PDF Expert vs PdfX

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

Head to head
About

PDF Expert

This app allows you to edit, annotate, fill out forms, and convert PDF documents. It offers AI-powered summarization and analysis, along with tools to merge, sign, and protect your files. Work seamlessly across Apple devices with a user-friendly interface.

Highlights
  • Edit PDF text and images
  • Annotate and highlight PDFs
  • Fill out PDF forms
  • Convert files to and from PDF
  • AI-powered summarization and analysis
  • Merge and combine PDF files
  • Sign documents with e-signatures
Features
Read full description

PDF Expert is a fast and easy PDF app to read, annotate, fill and sign PDF forms, convert files to PDF, and merge, split or compress documents – all in one intuitive app for iPhone, iPad, Mac & Vision Pro. Read PDF files with comfort, highlight and mark up text, fill out forms, sign contracts, create and convert PDFs, and summarize long documents in seconds with AI-powered tools. Unlock unlimited possibilities with PDF Expert Premium and work across all your Apple devices. "PDF Expert is one of my must-have iPad apps and a desktop-class PDF reader." – MacStories "The best app for managing, editing, and reading PDFs on your iPad." – The Sweet Setup ▶ WITH PDF EXPERT, YOU CAN: READ PDFs - PDF reader with Day, Night, and Sepia modes for comfortable reading anytime - Scroll PDFs vertically or horizontally and search text in any document - Open and view PDF files from email, web, Files, or any app via the Share menu - Read PDFs out loud with Text to Speech ANNOTATE AND MARK UP PDFs - Highlight, underline, and strike through text in your PDFs - Mark up documents with pen, shapes, text, notes, and comments - Add stamps such as Approved or Confidential - Record your voice and add audio notes to PDFs FILL AND SIGN PDF FORMS - Fill out PDF forms with text fields, checkboxes, and radio buttons - Sign PDF documents in seconds – draw your signature or add it from an image - Save your signature to sign contracts, agreements, invoices, and applications faster - Fill, sign, and send forms right from your iPhone – no printing or scanning needed - Supports all major form formats, including AcroForms and static XFA forms ***PREMIUM FEATURES*** EDIT PDFs - Edit text directly in a PDF – just as you would in a Word document - Add, replace, and resize images in your PDFs - Add links to other pages or websites - Add outlines to navigate large PDFs CREATE AND CONVERT PDFs - Create PDFs from Word files, images, and other documents - Convert Word to PDF, JPG to PDF, and PNG to PDF in seconds - Convert PDF to Word, Excel, PowerPoint, JPG, PNG, and TXT MERGE, SPLIT AND ORGANIZE PDFs - Merge and combine multiple PDF files into one - Split PDFs and extract pages into a new file - Add, delete, rotate, and reorder pages with thumbnail preview COMPRESS PDFs - Compress PDFs to reduce file size for email and sharing - Shrink large PDF files to save space on your device SUMMARIZE PDFs WITH AI – PDF COPILOT - List Main Points – get key takeaways from any PDF - Summarize – get concise summaries of entire PDFs or annotations - Ask Anything – find details with AI answers and references - Explain – get instant explanations of words or phrases PROTECT YOUR FILES - Password-protect PDF Expert - Redact – permanently black out sensitive information WORK WITH SCANNED DOCUMENTS - Open scanned PDFs to fill out, sign, annotate, and share CONSTRUCTION TOOLS - Scale and measure drawings with the Measure tab - Polygon, polyline, and redline tools MORE FEATURES - Customizable toolbar - Presentation Mode - Print and share PDFs via email or cloud ONE ACCOUNT FOR ALL YOUR APPLE DEVICES One Premium subscription covers PDF Expert on iPhone, iPad, and Mac – no need to buy versions separately. Read more about our terms and conditions here: https://pdfexpert.com/privacy https://pdfexpert.com/terms Don’t hesitate to reach out to us at http://readdle.com/contact

About

PdfX

Easily convert PDF files to various formats, edit pages, merge documents, and split PDFs. This tool requires no technical knowledge to manage all your PDF needs.

Highlights
  • Convert PDF to 5 formats
  • Edit PDF pages
  • Merge PDF files
  • Split PDF into documents
  • Rotate pages up to 360 degrees
  • Supports Word, JPG, PNG, HTML, TXT
Features
Read full description

PdfX.app is a new app, that allows you to convert PDF into a variety of formats, edit PDF, split PDF, combine PDF and much more! You can upload any document in PDF format, no technical knowledge is needed, and the website will automatically convert it's content into the format you desire. Plus, you can edit the PDF pages, rotate them, split them, combine it with other and more! Packaged with features, to manager every PDF management need: -> Merge with another PDF file at any page point. -> Split into several documents, with no problem -> Rotate up to 360 degrees any page -> Convert from and to up to 5 different formats -> Supporting Microsoft Word, JPG, PNG, HTML, TXT conversion formats Convert and edit your PDF, for FREE, NOW!

Screenshots

PDF Expert4 screens
PdfX4 screens

Verdict

The call

The clearest difference is rating: PDF Expert at 4.7 against PdfX's 2.0. PDF Expert also leads on ads (none vs shown) and ratings volume (216K vs 3). PdfX's advantage is in-app purchases (none vs 12) and iOS requirement (11.0 vs 16.0). On price, update cadence 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 Expert sells 10 in-app purchases, starting at $9.99 per month. PdfX asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PDF Expert holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: PDF Expert has 216K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

PDF Expert ships an update fortnightly, PdfX every 2 weeks. The most recent releases landed on October 1, 2026 and September 23, 2026 respectively.

Scorecard7 real differences · 4 level
PDF Expert versus PdfX: the parameters behind the verdict, then further details
ParameterPDF ExpertPdfX
PriceFreeFree
Rating4.7 (216K ratings) — better2.0 (3 ratings)
Positive reviews45.6% of reviews—
Number of ratings216K — better3
Update frequencyFortnightlyEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
Best chart rank#73 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.011.0 — better
Further details — not scored
Size307 MB38 MB
Age rating4+4+
DeveloperReaddle Technologies LimitedIpsilon Developments Inc

Customer experience

PDF Expert

All ratings215,975 ratings
Positive92.4%
Neutral2.3%
Negative5.3%
Written reviews1,147 reviews
Positive45.6%
Neutral7.4%
Negative47.0%

PdfX

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%

Bugs and requests

PDF Expert

Reported bugs

4 issues
  • Corrupted PDFs after editing
  • Sync issues with cloud storage providers
  • Unexpected loss of annotations and edits
  • Unreliable performance on older iPad models

Requested features

5 requests
  • Improved palm rejection for Apple Pencil
  • Customizable toolbar and annotation presets
  • Better integration with other productivity apps
  • More flexible file management and organization
  • Ability to create fillable PDF forms

PdfX

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

PDF Expert

Subscriptions9
  • PDF Expert Premium Trial7 Days trial$9.991 Month
  • PDF Expert Premium No Trial$9.991 Month
  • PDF Expert for Education7 Days trial$39.991 Year
Show 6 more
  • PDF Expert Premium7 Days trial3 variants$49.991 Year
  • PDF Expert Premium New7 Days trial$49.991 Year
  • PDF Expert Premium Existing7 Days trial$49.991 Year
  • PDF Expert – Premium Editing1 Year trial$49.991 Year
  • PDF Expert Mac & iOS Pro7 Days trial$79.991 Year
  • PDF Expert Mac & iOS7 Days trial$79.991 Year
One-time1
  • PDF Expert Basic$9.99
None

PdfX

No in-app purchases

Questions

Is PDF Expert free?
PDF Expert is free to download, with in-app purchases available.
Is PdfX free?
PdfX is free to download, with no in-app purchases.
Which has better reviews, PDF Expert or PdfX?
PDF Expert is rated higher. PDF Expert averages 4.7 out of 5 from 216K ratings, while PdfX averages 2.0 from 3 ratings.
Do PDF Expert or PdfX have ads?
PdfX shows ads; PDF Expert does not.
Which is updated more often, PDF Expert or PdfX?
PDF Expert ships an update fortnightly, and PdfX every 2 weeks. Most recently, PDF Expert was updated on October 1, 2026 and PdfX on September 23, 2026.

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