Comparison

PDF Pro vs PDF Merge X

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

Head to head
About

PDF Pro

Edit, annotate, and read PDF documents on your iPhone and iPad. Highlight text, add notes, shapes, voice recordings, and photos. Search your entire PDF library, fill out forms, and sign documents.

Highlights
  • Edit and annotate PDFs
  • Highlight text and add notes
  • Embed audio and photo annotations
  • Full-text search of PDF library
  • Fill out and sign PDF forms
  • Organize PDFs with folders and tags
  • Import from cloud storage
Features
Read full description

PDF Pro lets you read, edit and annotate your PDF documents directly on your iPhone and iPad. Highlight text, take notes, embed shapes or draw with your finger. You can even embed voice recordings or photo annotations. Full-text-search your entire PDF library with just a single tap. Above all PDF Pro comes with full-featured PDF form and signature support. Key-Features At A Glance: • POWERFUL SEARCH: ∙ Full-text-search your entire PDF library. ∙ Search inside specific documents with easy navigation through the search results. ∙ Look-up selected text directly on Wikipedia or in the included dictionaries. • FILE-MANAGEMENT: ∙ Group your PDFs in folders and tag them with colorful labels. ∙ Import PDFs from your Dropbox®, Microsoft OneDrive® or Google Drive®. ∙ Add PDFs via USB or WiFi. ∙ Open E-Mail attachments. • CLEAR VIEW: ∙ Easily browse through all your annotations. ∙ Full PDF outline support. You can even search the outline. ∙ Get an overview of all your bookmarked or annotated pages just with a single tap. • SHARE and PRINT: ∙ Easily share your annotated documents with your friends or co-workers. ∙ Print your annotated and edited PDFs. ∙ You can even share or print single pages of a document. • HIGH SPEED and STABILITY: ∙ Rapid viewing of PDF documents. ∙ Smooth display of very large PDF files. • NIGHT MODE: ∙ Makes reading in the dark much easier on the eyes. • SECURITY: ∙ Support for password-protected PDFs • AND MUCH MORE... Premium Features and Premium Offer include: • ANNOTATIONS and NOTES: ∙ Highlight text, take notes or draw with your finger. ∙ Powerful shape editor for arrows, rectangles, circles, lines and much more. ∙ Embed audio and photo annotations into your PDFs. ∙ Use predefined stamps or create your own. • DOCUMENT EDITOR: ∙ Create new pages. ∙ Export pages or merge them into existing documents. ∙ Reorder, rotate and delete pages. • CONTENT EDITOR: • Modify the existing content of PDF documents. • MULTITASKING: ∙ Work with multiple PDFs at a time. ∙ Copy and paste annotations, shapes, images or text from one PDF document into another. • FORM SUPPORT: ∙ Just fill out your PDF form, sign it with your handwritten signature and you are ready to send it via E-Mail or print it via AirPrint®. A monthly or annual subscription is required to get access to all premium features and premium offer. --- Subscriptions automatically renew monthly or yearly depending on your plan unless auto-renew is turned off at least 24-hours before the end of the current period. Plans are priced at $3.99USD monthly and $24.99USD yearly (pricing may vary in countries other than the U.S.). Payment will be charged to your App Store Account at confirmation of purchase. To avoid automatic renewal, you must turn off auto-renew at least 24 hours before your subscription ends. You can turn off auto-renew at any time from your App Store Account Settings. Terms of Use: https://pdf-pro.net/terms-of-service/ Privacy Policy: https://pdf-pro.net/privacy-policy/

About

PDF Merge X

Easily merge, reorder, and rotate PDF documents. This app offers fast, secure, and offline processing for organizing notes, contracts, and more. It provides a simple interface for combining multiple files into one, with options to add pages and preview changes before sharing.

Highlights
  • Merge multiple PDFs
  • Reorder and rotate pages
  • Combine PDFs without quality loss
  • Add blank pages or images
  • Offline processing
  • No watermarks
Features
Read full description

The Ultimate PDF Merger & Organizer – Fast, Simple, & Secure Need to reorder pages, merge PDF documents, or rotate PDFs? PDF Merge X is the smart, no-fuss solution. Whether you're a student organizing notes or a pro managing contracts, PDF Merge X gives you full control. Fast, offline, and without watermarks. Why PDF Merge X? Merge PDF in One Tap – Quickly combine multiple PDFs into a single, organized document. Join PDFs Without Quality Loss – Keep your document quality intact while merging. Rearrange & Organize – Easily reorder, delete, or duplicate pages within your PDF. Secure & Private – Process files offline with no data stored on external servers. Built-in Features for Better PDF Control Merge PDFs Effortlessly – Select multiple files and combine them into one seamless document. PDF Join & Combine – Keep files organized with fast PDF joining. Reorder & Rotate Pages – Drag-and-drop to organize or fix page orientation. Add Pages Easily – Insert blank pages or add images from your photo library directly into any PDF. Instant PDF Preview – Check your document before finalizing changes. Merge PDFs in One Go – Combine several PDFs at once with a dedicated merge action. Lightning-Fast Performance – Our PDF merger is optimized for speed and efficiency. Seamless Sharing – Export PDFs and share via email, iCloud Drive, or your favorite apps. Undo & Redo Support – Make adjustments confidently with undo and redo options. iCloud & Files App Integration – Open and save files directly from your preferred storage. Built-in PDF Previewer – Review your PDFs without leaving the app. How it Works Drag, Drop & Merge – Select your PDFs and join them instantly. Reorder & Rotate – Arrange pages in any order or adjust orientation. Preview & Share – Review before saving and share effortlessly. Free Version – Simple & Powerful PDF Editing Get started with PDF Merge X for free and access essential PDF editing tools without subscriptions. What’s Included in the Free Version? Merge PDFs – Combine up to two PDFs into a single document. Reorder & Rotate – Rearrange pages or adjust orientation. Delete Pages – Remove unwanted pages with one tap. Preview & Share – Check your document before saving and export seamlessly. Upgrade to Pro with a one-time purchase and unlock unlimited PDF editing, and advanced features—no recurring fees. No watermarks. No ads. No subscriptions. Just powerful, easy-to-use PDF tool! Try PDF Merge X Today! Merge, reorder, combine, and manage your PDF files with ease. Download PDF Merge X now and streamline your workflow in just a few taps!

Screenshots

PDF Pro4 screens
PDF Merge X4 screens

Verdict

The call

The clearest difference is rating: PDF Pro at 4.7 against PDF Merge X's 4.1. PDF Pro also leads on ratings volume (6.9K vs 91) and iOS requirement (17.0 vs 26.0). PDF Merge X's advantage is monetization model (free with in-app purchases vs subscription). On price, review sentiment, update cadence and ads 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 Pro sells 12 in-app purchases, starting at $1.99 per month and PDF Merge X sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PDF Pro holds the better App Store score, 4.7 against 4.1. That said, the two scores are not equally well evidenced: PDF Pro has 6.9K ratings behind it against 91, so its average is the more settled of the two. Written reviews complicate that: 60% of PDF Pro's written reviews are positive against 65% of PDF Merge X's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

Scorecard4 real differences · 6 level
PDF Pro versus PDF Merge X: the parameters behind the verdict, then further details
ParameterPDF ProPDF Merge X
PriceFreeFree
Rating4.7 (6.9K ratings) — better4.1 (91 ratings)
Positive reviews60.3% of reviews64.9% of reviews — better
Number of ratings6.9K — better91
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.0 — better26.0
Further details — not scored
Size91 MB14 MB
Age rating4+4+
DeveloperDominic RodemerDaniel Jirku

Customer experience

PDF Pro

All ratings6,925 ratings
Positive93.4%
Neutral3.2%
Negative3.3%
Written reviews423 reviews
Positive60.3%
Neutral10.4%
Negative29.3%

PDF Merge X

All ratings91 ratings
Positive78.0%
Neutral3.3%
Negative18.7%
Written reviews74 reviews
Positive64.9%
Neutral4.1%
Negative31.1%

User reviews

PDF Pro

From 6.9K App Store ratings

What we love

  • 👍 User-friendly interface
  • 🚀 Fast and efficient
  • 💡 Excellent PDF management features
  • 🔒 Secure and reliable
  • 🎨 Great annotation tools

Room to improve

  • 🐛 Crashes and stability issues
  • 💰 Expensive subscription model
  • 🔍 Inconsistent search functionality
  • 📖 Loses last read position
  • 🖋️ Unreliable handwriting support

PDF Merge X

From 91 App Store ratings

What we love

  • 🚀 Quick and easy merging
  • 👍 Intuitive and user-friendly
  • 💡 Adds empty pages
  • 👍 Makes users feel like wizards
  • 👍 Avoids Adobe subscription

Room to improve

  • 🐛 Cannot view 2 pages side-by-side
  • 🐛 No landscape mode for iPads
  • 🐛 Free version limited after update
  • 🐛 Cannot search for PDFs locally
  • 🐛 App is not free

Bugs and requests

PDF Pro

Reported bugs

5 issues
  • Annotations and highlights randomly disappearing
  • Compatibility issues with newer iOS versions
  • Corrupted PDF files after editing
  • Slow performance on older devices
  • Inconsistent behavior when switching between PDFs

Requested features

5 requests
  • Improved bookmarking and note-taking
  • Seamless iCloud/cloud storage integration
  • Customizable keyboard shortcuts
  • Advanced text editing and OCR capabilities
  • Better organization and folder management

PDF Merge X

Reported bugs

15 issues
  • Cannot view 2 pages side-by-side
  • App gets stuck on saving screen
  • No landscape mode for iPads
  • Latest update made free version paid
  • Cannot search for PDFs on phone unless cloud/recents
Show 10 more
  • Does not preserve signatures
  • Watermark remains after purchase
  • Unmerged PDFs disappeared
  • Changes disappear after saving
  • No iPad UI
  • App crashes when clicking share/OneDrive icon
  • No email attachment added
  • Cannot open PDFs
  • Original PDF text wiped in merge
  • Cannot view, save, mail, or transfer PDFs

Requested features

6 requests
  • Batch renaming
  • Better preview zoom
  • Night mode
  • Landscape mode for iPads
  • Advanced search functionality
Show 1 more
  • Ability to overwrite original documents

In-app purchases

12 purchases

PDF Pro

Subscriptions12
  • Offer - Monthly - macOS3 Days trial$1.991 Month
  • Offer - Monthly - iOS3 Days trial$2.991 Month
  • Premium - Monthly - iOS3 Days trial$3.991 Month
Show 9 more
  • Premium - Monthly - macOS3 Days trial$4.991 Month
  • Offer - Annual - iOS3 Days trial$12.991 Year
  • Offer - Annual - macOS3 Days trial$22.991 Year
  • Premium - Annual - iOS3 Days trial$24.991 Year
  • Offer - macOS + iOS3 Days trial$24.991 Year
  • Offer - iOS + macOS3 Days trial$29.991 Year
  • Premium - Annual - macOS3 Days trial$44.991 Year
  • Premium - iOS + macOS3 Days trial$49.991 Year
  • Premium - macOS + iOS3 Days trial$49.991 Year
1 purchases

PDF Merge X

One-time1
  • PDF Merge X Pro$6.99

Questions

Is PDF Pro free?
PDF Pro is free to download, with in-app purchases available.
Is PDF Merge X free?
PDF Merge X is free to download, with in-app purchases available.
Which has better reviews, PDF Pro or PDF Merge X?
PDF Pro is rated higher. PDF Pro averages 4.7 out of 5 from 6.9K ratings, while PDF Merge X averages 4.1 from 91 ratings.
Do PDF Pro or PDF Merge X have ads?
Neither PDF Pro nor PDF Merge X shows ads.
Which is updated more often, PDF Pro or PDF Merge X?
PDF Pro ships an update every 2 months, and PDF Merge X every 2 months. Most recently, PDF Pro was updated on September 24, 2026 and PDF Merge X on September 21, 2026.

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