Comparison

PDF Reader Pro vs One Scan

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

Head to head
About

PDF Reader Pro

This app offers comprehensive tools for managing PDF documents on mobile devices. It allows users to read, edit text and images, annotate, fill forms, convert to various formats, compress files, and perform OCR. Organize, protect, and share your PDFs with ease.

Highlights
  • Read PDFs with multiple viewing options
  • Edit PDF text and images
  • Annotate with highlights, notes, and drawings
  • Fill out PDF forms
  • Convert PDFs to Word, Excel, and other formats
  • Perform OCR on PDFs
  • Compress PDF file sizes
Features
Read full description

PDF Reader Pro helps much for anyone who reads, edit, highlights, OCR, signs, converts, creates, protects, compresses and fills out PDFs on their iPhone and iPad. It also makes it easy to organize, annotate and edit your PDFs. Import files from your computer or the cloud, then complete forms, add freehand drawings and audio notes and more. PDF Reader Pro offers even more - merge and combine multiple documents, split your PDFs, insert pages from another PDF, insert photos or hyperlinks to your PDFs, Convert PDF to Word and other Microsoft Office® formats. With support for reading files from popular productivity suites, it’s a convenient way to take the office anywhere you go. PDF Reader Pro Edition for Professional is your last choice of PDF application. READ ・ View PDFs with various themes like night mode to comfort your eyes. ・ Choose vertically/horizontally scroll pages or single pages/two pages/book mode. ・ Support crop mode, tabbed PDF reading, continuous page view, auto scroll and more. ・ Use text-to-speech feature to read selected text with no time limits. ・ Easy content navigation with bookmarks/outlines. ・ Fast files Printing to directly print PDFs from your device. ・ DRM, supports Vitrium* protected PDF files. ANNOTATE ・ Annotate PDFs with highlight, underline, strikethrough, note, freehand, text box, anchored note, rectangle, circle, line etc. ・ Create multiple signatures with trackpad, keyboard or images. ・ Insert pre-designed stamps such as Approved, Confidential and more. ・ Support to link any part of the text to a different page, email or website. ・ Share your annotated PDFs with others via PDF documents/Flattened copy/ Summary/ Original PDF. EDIT PDF ・Edit PDF text. Easily fix typos or other inaccurate content. Fast change the font color, size and style. ・Modify PDF images such as cropping, rotating, deleting, replacing, etc. Easily resize or move images for a better layout. ・Add and edit watermarks to keep your PDFs safe and professional. Watermark tiling is supported. ・Extract images from PDFs. ・Create a Flattened copy to flatten PDF to make the contents static. PAGE EDITOR ・ Merge & Split PDFs available, split documents into multiple documents or combine multiple pages into a new one. ・ Extract the desired pages to create a new PDF. ・ Insert blank pages / another PDF to import specified content. ・ Rotate, rearrange, add, and delete PDF pages. Fill FORMS ・ Work with static PDF forms created in Adobe Acrobat. ・ Fill out any PDF forms with interactive fields such as text fields, checkboxes, radio buttons, combo boxes, list boxes, etc. CONVERT PDF · Export from PDF to Microsoft Word (.docx), PowerPoint (.pptx), Excel (.xlsx), RTF, Text, Image, HTML, CSV, and more Offline. ・ Convert MS Office documents, iWorks, web content, and images to PDFs. ・ Create a new PDF as a blank PDF / from your clipboard content. COMPRESS PDFs ・ Compress large PDFs to reduce file size. PDF size-reduction for easily sharing. OCR · OCR pdfs to convert scanned PDF files or pictures into editable and searchable PDFs or TXT files. 50+ languages supported! PROTECT CONTENT WITH PASSWORD AND ENCRYPTION ・ Passcode to prevent unauthorized use of PDF Reader Pro. ・ Encrypt to protect your PDF files from unauthorized reading with a password. SCANNER ・Make continuous scans and automatically detect edges of scanned objects. Text-to-Speech ・ Support a total of 36 voices for 26 languages. WORK IN THE CLOUD ・ Store and secure files on iCloud Drive, Dropbox, OneDrive, Google Drive, Evernote, Box, FTP, WebDav, etc. Backup Files between iOS Devices, Mac and PC ・ Connect your iPhone/iPad with a desktop for transferring files using USB or WiFi connection. Support Various File Types ・ MS Office, iWork, image files ・ Compressed files (zip, rar) ・ audio and video files ・ Other file formats Have any feedback? Please contact us directly at support@pdfreaderpro.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

One Scan

Easily scan, convert, and sign documents from your device. Organize your business and personal files with features like auto-detection, flash, and folder management. Edit, e-sign, and share your scanned documents quickly and efficiently.

Highlights
  • Scan documents with auto-detection
  • Convert to PDF instantly
  • E-sign and paraph files
  • Organize with folders and search
  • Share via email and text
  • Import files from cloud storage
Features
Read full description

One Scan turns your iPhone and iPad into a powerful AI scanner. Point, tap, done: documents, receipts, ID cards, books and photos become crisp, searchable PDFs in one tap. Then sign, edit, organize and share them in seconds. Everything you expect from a top scanner app, without the clutter. No settings to fiddle with, no learning curve: One Scan does the hard work for you. SCAN ANYTHING IN ONE TAP - Automatic edge detection, perspective correction and shadow removal - Batch mode: capture dozens of pages in a row and get a single multi-page PDF - Smart filters: color, grayscale, black & white, whiteboard and auto-enhance - Dedicated modes for documents, ID cards (front and back on one page), passports, business cards, books, receipts and photos - Import from Photos, Files, Mail or any app with the Share Sheet - Built-in QR code and barcode reader AI THAT DOES THE BORING PART - OCR text recognition in 100+ languages: copy, search and export the text of any scan - AI summaries and instant answers: ask a question about a contract, an invoice or a report and get the answer - Smart naming and auto-sorting: One Scan reads your document, names it and files it for you - Data extraction: pull dates, totals and vendors from receipts and invoices, ready to export - One-tap translation of scanned text SIGN AND EDIT PDFS - Sign with your finger, Apple Pencil or a saved signature; add initials, dates and text fields - Fill out forms, annotate, highlight, draw, add stamps and watermarks - Reorder, rotate, delete, merge and split pages - Compress files, choose the page size (A4, Letter…) and the margins - Export as PDF, JPG, PNG, TXT or Word ORGANIZE AND FIND EVERYTHING - Folders, tags and favorites - Full-text search inside your scans, powered by OCR - iCloud sync keeps your library up to date on iPhone and iPad - Save to Files, iCloud Drive, Google Drive, Dropbox or OneDrive - Share by Mail, Messages, AirDrop or WhatsApp, or print with AirPrint PRIVATE BY DESIGN - Your scans are processed on your device and stay in your library. No account required - Lock the app and individual documents with Face ID, Touch ID or a passcode - Password-protect PDFs before you share them - No ads, and we never sell your data MADE FOR IPHONE AND IPAD - Full iPad experience: Split View, drag and drop, keyboard shortcuts and Apple Pencil - Home Screen widgets, Siri Shortcuts and a Files extension to scan from anywhere - Optimized for the latest iOS and iPadOS PERFECT FOR Students, teachers, freelancers, small businesses, travelers and remote workers. Anyone who needs to scan contracts, receipts, notes, whiteboards, IDs or old family photos. Terms of Use: https://mwm.ai/legal/scanner/terms-of-use Privacy Policy: https://mwm.ai/legal/scanner/privacy-policy

Screenshots

PDF Reader Pro4 screens
One Scan4 screens

Verdict

The call

The clearest difference is review sentiment: PDF Reader Pro at 64% against One Scan's 26%. PDF Reader Pro also leads on iOS requirement (13.0 vs 26.0). One Scan's advantage is ads (none vs shown) and rating (4.7 vs 4.4). On price, update cadence, in-app purchases and monetization model 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 Pro sells 6 in-app purchases, starting at $39.99 per year and One Scan sells 10 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

One Scan holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: One Scan has 12K ratings behind it against 437, so its average is the more settled of the two. Written reviews complicate that: 64% of PDF Reader Pro's written reviews are positive against 26% of One Scan'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 22, 2026 and September 24, 2026 respectively.

Scorecard5 real differences · 5 level
PDF Reader Pro versus One Scan: the parameters behind the verdict, then further details
ParameterPDF Reader ProOne Scan
PriceFreeFree
Rating4.4 (437 ratings)4.7 (12K ratings) — better
Positive reviews63.7% of reviews — better26.0% of reviews
Number of ratings43712K — better
Update frequencyEvery 2 monthsEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.0
Further details — not scored
Size194 MB40 MB
Age rating4+4+
DeveloperPDF Technologies, Inc.App Rover

Customer experience

PDF Reader Pro

All ratings437 ratings
Positive85.8%
Neutral3.9%
Negative10.3%
Written reviews328 reviews
Positive63.7%
Neutral5.2%
Negative31.1%

One Scan

All ratings11,765 ratings
Positive91.2%
Neutral2.8%
Negative5.9%
Written reviews208 reviews
Positive26.0%
Neutral6.3%
Negative67.8%

User reviews

PDF Reader Pro

From 437 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Fast and efficient
  • 💡 Useful features like highlighting and annotating
  • 👍 Great for reading and studying PDFs

Room to improve

  • 🐛 Crashes and bugs
  • 🔒 Security issues with locked files
  • 💰 Expensive upgrade to unlock full functionality
  • 🤖 Poor customer support and unresponsive developers

One Scan

From 12K App Store ratings

What we love

  • 🚀 Fast and easy to use
  • 📸 Excellent image quality
  • 💾 Convenient document storage

Room to improve

  • 🐛 Crashes and stability issues
  • 💰 Expensive subscription model
  • 🔒 Difficulty cancelling subscription

Bugs and requests

PDF Reader Pro

Reported bugs

4 issues
  • Annotations not saving or displaying correctly
  • App crashing when trying to convert or edit PDFs
  • Syncing issues between devices
  • Unexpected password locks on files

Requested features

4 requests
  • Undo/redo functionality for annotations
  • More font and theme options
  • Improved compatibility with cloud storage services
  • Better support for older devices

One Scan

Reported bugs

3 issues
  • App freezes and becomes unresponsive
  • Scans not saving properly
  • Subscription charges continue even after cancellation

Requested features

3 requests
  • Free tier with limited scans
  • Ability to export scans to cloud storage
  • Better customer support and communication

In-app purchases

6 purchases

PDF Reader Pro

Subscriptions4
  • Add 2-Device · Advanced Annual$39.991 Year
  • Add Devices · Advanced Annual$49.991 Year
  • PDF Pro · Advanced Annual$79.991 Year
Show 1 more
  • PDF Pro · AI Annual1 Year trial$79.991 Year
One-time2
  • Permanent License$24.99
  • PDF Pro · Advanced Permanent$39.99
10 purchases

One Scan

Subscriptions10
  • Weekly Premium Pass7 Days trial$3.997 Days
  • Weekly Premium Pass7 Days trial$5.997 Days
  • Scanner Premium Pass7 Days trial$7.997 Days
Show 7 more
  • Monthly Premium Pass7 Days trial$9.991 Month
  • Monthly Premium Pass3 Days trial$9.991 Month
  • Annual Premium Pass$29.991 Year
  • Annually Premium Pass7 Days trial$49.991 Year
  • Yearly Premium Pass3 Days trial$49.991 Year
  • Yearly Premium Pass.$49.991 Year
  • Annually Premium Pass7 Days trial$59.991 Year

Questions

Is PDF Reader Pro free?
PDF Reader Pro is free to download, with in-app purchases available.
Is One Scan free?
One Scan is free to download, with in-app purchases available.
Which has better reviews, PDF Reader Pro or One Scan?
One Scan is rated higher. PDF Reader Pro averages 4.4 out of 5 from 437 ratings, while One Scan averages 4.7 from 12K ratings.
Do PDF Reader Pro or One Scan have ads?
PDF Reader Pro shows ads; One Scan does not.
Which is updated more often, PDF Reader Pro or One Scan?
PDF Reader Pro ships an update every 2 months, and One Scan every 2 months. Most recently, PDF Reader Pro was updated on September 22, 2026 and One Scan on September 24, 2026.

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