Comparison

Sites vs PDF Reader Pro

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

Head to head
About

Sites

Access websites, presentations, and catalogs offline on your iPhone. Upload content from your desktop and view it anytime, anywhere, even without an internet connection. Ideal for sales, design, and educational purposes.

Highlights
  • Offline website access
  • Store online catalogs
  • View presentations offline
  • Upload from desktop
  • Supports zip archives
  • External monitor output
Features
Read full description

Take your websites with you, everywhere you go... Store online catalogs, websites, presentations directly on iPhone, and access them anytime, anywhere. Enjoy web browsing, even when not connected to the Internet. - Sales personal gets instant access to company catalogs - Web designers can show their work, even before site is deployed to web server - Employes access valuable information, even when they are disconnected from the company intranet - Students can study online materials, when they are offline Increase your employees’ mobility and productivity by uploading company HTML-based catalogs, presentations, support materials to their iPhones. The app can show presentations on external monitors or projectors (VGA or HDMI adapter for connection). Upload websites from desktop computers directly to iPhone, either in web browser, or from iTunes. You can upload: - Zip archives (up to 2GB size and up to 64 thousand files) containing websites, - Web Archives, - single HTML files, - PDF files, - and any other files that can be viewed in Safari browser on your iPhone. *** YOU CAN TRY IT BEFORE BUYING *** Still not sure if this app will work for you? Try its free version "Sites-2-Go Lite".

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/

Screenshots

Sites3 screens
PDF Reader Pro4 screens

Verdict

The call

The clearest difference is price: PDF Reader Pro at Free against Sites's $4.99. PDF Reader Pro also leads on update cadence (every 2 months vs every 40 months) and ratings volume (437 vs 1). Sites's advantage is rating (5.0 vs 4.4) and review sentiment (100% vs 64%). On device support and iOS requirement 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

PDF Reader Pro is free to download; Sites costs $4.99 up front. PDF Reader Pro sells 6 in-app purchases, starting at $39.99 per year. Sites asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sites holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: PDF Reader Pro has 437 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Sites's written reviews are positive against 64% of PDF Reader Pro's.

UpkeepUpdate frequency

Sites ships an update every 40 months, PDF Reader Pro every 2 months. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

Scorecard8 real differences · 2 level
Sites versus PDF Reader Pro: the parameters behind the verdict, then further details
ParameterSitesPDF Reader Pro
Price$4.99Free — better
Rating5.0 (1 ratings) — better4.4 (437 ratings)
Positive reviews100.0% of reviews — better63.7% of reviews
Number of ratings1437 — better
Update frequencyEvery 40 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.013.0
Further details — not scored
Size8 MB194 MB
Age rating4+4+
DeveloperMaximumSoft Corp.PDF Technologies, Inc.

Customer experience

Sites

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

PDF Reader Pro

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

Bugs and requests

Sites

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

Sites

No 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

Questions

Is Sites free?
Sites costs $4.99, with no in-app purchases.
Is PDF Reader Pro free?
PDF Reader Pro is free to download, with in-app purchases available.
Which has better reviews, Sites or PDF Reader Pro?
Sites is rated higher. Sites averages 5.0 out of 5 from 1 ratings, while PDF Reader Pro averages 4.4 from 437 ratings.
Do Sites or PDF Reader Pro have ads?
PDF Reader Pro shows ads; Sites does not.
Which is updated more often, Sites or PDF Reader Pro?
Sites ships an update every 40 months, and PDF Reader Pro every 2 months. Most recently, Sites was updated on October 8, 2026 and PDF Reader Pro on October 16, 2026.

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