Comparison

PDF Expert vs Image Converter

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

Image Converter

Easily convert images to over 20 formats like JPG, PNG, PDF, and SVG. This app offers a user-friendly interface for efficient media management, making it simple to prepare photos for professional use or sharing.

Highlights
  • Convert to 20+ image formats
  • Supports JPEG, PNG, PDF, SVG, HEIC
  • User-friendly interface
  • Efficient media management
  • Professional and sharing use cases
Features
Read full description

Image Converter lets you convert your images to over 20 different output formats, including TIFF, GIF, JPG, PSD, PNG, PDF, SVG, BMP, EPS, HDR, ICO, TGA, WBMP, and WebP. Whether you need to convert your photos for professional use or simply want to share them with friends and family, Image Converter makes it easy for you. Image Converter's user-friendly interface makes it easy to manage your media collection efficiently. Download it today and start organizing your media collection like a pro! ---- We currently offer one auto-renewing subscription option: $9.99/year By subscribing you get unlimited file conversions.Payment will be charged to iTunes Account at confirmation of purchase. Your subscription will automatically renews 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 prior to the end of the current period. Subscriptions may be managed and auto-renewal may be turned off by going to the Account Settings after purchase. No cancellation of the current subscription is allowed during active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable For the Terms of service and privacy policy, please check: http://braincake.net/conv_privacy.html http://braincake.net/conv_terms.html

Screenshots

PDF Expert4 screens
Image Converter4 screens

Verdict

The call

The clearest difference is monetization model: PDF Expert at free with in-app purchases against Image Converter's subscription. PDF Expert also leads on ratings volume (216K vs 9K) and chart position (#73 vs unranked). Image Converter's advantage is review sentiment (68% vs 46%) and iOS requirement (13.1 vs 16.0). 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. PDF Expert sells 10 in-app purchases, starting at $9.99 per month and Image Converter sells 1 in-app purchase, starting at $9.99 per year. 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 — 4.7 for PDF Expert against 4.7 for Image Converter. That said, the two scores are not equally well evidenced: PDF Expert has 216K ratings behind it against 9K, so its average is the more settled of the two. Written reviews are what separate them: 46% of PDF Expert's written reviews are positive against 68% of Image Converter's.

UpkeepUpdate frequency

PDF Expert ships an update fortnightly, Image Converter monthly. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

Scorecard6 real differences · 5 level
PDF Expert versus Image Converter: the parameters behind the verdict, then further details
ParameterPDF ExpertImage Converter
PriceFreeFree
Rating4.7 (216K ratings)4.7 (9K ratings)
Positive reviews46.0% of reviews68.2% of reviews — better
Number of ratings216K — better9K
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
Best chart rank#73 — better—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.013.1 — better
Further details — not scored
Size307 MB25 MB
Age rating4+4+
DeveloperReaddle Technologies LimitedFitness Labs

Customer experience

PDF Expert

All ratings215,975 ratings
Positive92.4%
Neutral2.3%
Negative5.3%
Written reviews1,136 reviews
Positive46.0%
Neutral7.5%
Negative46.6%

Image Converter

All ratings9,028 ratings
Positive93.5%
Neutral2.3%
Negative4.2%
Written reviews456 reviews
Positive68.2%
Neutral3.9%
Negative27.9%

User reviews

PDF Expert

From 216K App Store ratings

What we love

  • 🚀 Fast and responsive
  • 👍 Intuitive and user-friendly interface
  • 💡 Powerful annotation and editing tools
  • 🔒 Seamless cloud integration
  • 📚 Excellent for reading and organizing PDFs

Room to improve

  • 🐛 Frequent crashes and stability issues
  • 🔒 Subscription model for advanced features
  • 🔒 Inconsistent pricing and feature changes
  • 🔍 Cluttered and confusing UI in latest update
  • 🔍 Reduced customization options for annotations

Image Converter

From 9K App Store ratings

What we love

  • 🚀 Fast and easy to use
  • 👍 Simple and intuitive interface
  • 💡 Useful additional features (e.g., duplicate detection, video compression)
  • 🚀 Instant file conversion

Room to improve

  • 🐛 Crashes and freezes
  • 🔒 Mandatory full access to photo library
  • 🔒 Privacy concerns with data handling
  • 🔋 High battery consumption

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

Image Converter

Reported bugs

3 issues
  • Conversion results in corrupted or black/white images
  • Inability to locate converted files
  • Disappearance of existing files after conversion

Requested features

5 requests
  • Option to retain EXIF data during conversion
  • Support for more file formats (e.g., RAW, DNG)
  • Batch conversion and multi-file selection
  • Ability to adjust image quality/size after conversion
  • Avoid subscription model, offer one-time purchase instead

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
1 purchases

Image Converter

Subscriptions1
  • Image Converter Pro3 Days trial$9.991 Year

Questions

Is PDF Expert free?
PDF Expert is free to download, with in-app purchases available.
Is Image Converter free?
Image Converter is free to download, with in-app purchases available.
Which has better reviews, PDF Expert or Image Converter?
PDF Expert and Image Converter are both rated 4.7 out of 5 on the App Store, from 216K and 9K ratings respectively.
Do PDF Expert or Image Converter have ads?
Neither PDF Expert nor Image Converter shows ads.
Which is updated more often, PDF Expert or Image Converter?
PDF Expert ships an update fortnightly, and Image Converter monthly. Most recently, PDF Expert was updated on September 25, 2026 and Image Converter on September 24, 2026.

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