Comparison

Right PDF Reader vs PDF Cabinet

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

Head to head
About

Right PDF Reader

This application provides robust PDF viewing, annotation, and management tools. It allows users to organize, share, and sign documents with a user-friendly interface and advanced features.

Highlights
  • Fast PDF viewing
  • Annotation tools (highlight, draw, text)
  • Document organization with folders
  • Cloud storage integration (Dropbox, WebDAV)
  • Handwritten signature creation
  • Form filling
  • Password protection
Features
Read full description

Right PDF Reader goes beyond a free PDF reader app. Created by a team of professionals in the PDF software business since 1993, Right PDF Reader has a simple UI that is easy to navigate and more features than average free readers. PDF Viewing - Fast document open speed - Browse lets you view PDFs in the device or iCloud - Supported thumbnail view - View PDF portfolio, comment, attachment and protected document - Single page view or continuous view available - Fit page width or whole page are also available under single page view - Use Day/Night mode to adjust brightness - After tapping page number, you can enter a number and jump to that page directly. - Quickly add and edit Bookmarks and Marks - Search document Note and Comments - Use highlight, cross-out and underline to annotate PDF with customizable color and opacity - Note lets you to add text comment anywhere in PDF - Use Draw Tools to mark up PDF with color, thickness and opacity of your choice. Move and undo are also supported - Batch remove comments Document Management - Create folder to organize PDFs better - Move or copy multiple documents to a folder - Compress multiple documents or folders, or extract any package quickly - Rename document - Attach one or multiple PDFs to an e-mail - Select and delete multiple documents Online Sharing - Get documents in and out of Dropbox - Add WebDAV servers to upload/download documents easily - Access documents in Gaaiho PDF online or upload documents directly to the app (permissions required), breaking the barrier between computer and your iPhone/iPad Handwritten signature - You can create a handwritten signature by drawing, using an image, or taking a photo - Sign anywhere in document Other Features - Fill a form - Use “open in” to share PDF files with other applications - Auto-memorize the point you quitted reading last time - Protect PDF with an open password - Print document

About

PDF Cabinet

This application offers a streamlined PDF experience for reading and annotating documents. It focuses on essential features with an intuitive interface, making it easy to mark up PDFs, share annotations, and collaborate in real-time with others. Optimized for performance, it handles large documents efficiently.

Highlights
  • Effortless PDF annotation
  • Intuitive user interface
  • Fast document review with thumbnails
  • Annotations sharing
  • Real-time collaboration
  • Quick note taking
Features
Read full description

THINGS WE ARE PROUD OF - Really effortless PDF annotation - Only the most essential functionality - don't lose yourself in hundreds of buttons - Intuitive user interface that allows you to do exactly what you want - Fast and easy document skimming and review with thumbnails sidebar - Ultimate performance – optimized for really large documents (within reason, of course) - Annotations sharing - send annotated documents to anyone, and mark up will show up in any other reader - Interaction with other Cabinet users - send annotations only to your friends or colleagues using Cabinet – much faster, less traffic - Real-time collaboration with your friends or colleagues – annotate the same document together from several iPads EVEN MORE GREAT THINGS IN CABINET - Amazing and intuitive dynamic annotation menu - Empty notebooks for quick note taking or doodling - Pen and Paper Games for relaxing during non-working hours - Sending multiple documents attached in a single e-mail - Easy work with various document formats - such as .doc, .xls, .ppt and others Did we tell you already that Cabinet is really easy to use? Try it out yourself!

Screenshots

Right PDF Reader4 screens

Verdict

The call

The clearest difference is rating: Right PDF Reader at 4.6 against PDF Cabinet's 3.8. Right PDF Reader also leads on review sentiment (92% vs 66%). PDF Cabinet's advantage is update cadence (every 5 weeks vs every 11 months) and ratings volume (56 vs 5). On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Right PDF Reader holds the better App Store score, 4.6 against 3.8. That said, the two scores are not equally well evidenced: PDF Cabinet has 56 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 92% of Right PDF Reader's written reviews are positive against 66% of PDF Cabinet's.

UpkeepUpdate frequency

Right PDF Reader ships an update every 11 months, PDF Cabinet every 5 weeks. The most recent releases landed on September 27, 2026 and September 28, 2026 respectively.

Scorecard4 real differences · 6 level
Right PDF Reader versus PDF Cabinet: the parameters behind the verdict, then further details
ParameterRight PDF ReaderPDF Cabinet
PriceFreeFree
Rating4.6 (5 ratings) — better3.8 (56 ratings)
Positive reviews92.3% of reviews — better66.1% of reviews
Number of ratings556 — better
Update frequencyEvery 11 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size79 MB75 MB
Age rating4+4+
DeveloperZEON CorpBright Nine SIA

Customer experience

Right PDF Reader

All ratings5 ratings
Positive80.0%
Neutral20.0%
Negative0.0%
Written reviews13 reviews
Positive92.3%
Neutral7.7%
Negative0.0%

PDF Cabinet

All ratings55 ratings
Positive67.3%
Neutral10.9%
Negative21.8%
Written reviews127 reviews
Positive66.1%
Neutral14.2%
Negative19.7%

Bugs and requests

Right PDF Reader

Not enough reviews yet to summarise bugs or requests.

PDF Cabinet

Reported bugs

5 issues
  • Randomly deleting files
  • Sync issues causing loss of annotations
  • Crashing when opening large documents
  • Navigation problems when zoomed in
  • Annotations not exporting properly

Requested features

7 requests
  • Add more highlighter and pen color options
  • Implement palm rejection for Apple Pencil
  • Add ability to resize and move annotation tools
  • Improve cloud/sync functionality (iCloud, Dropbox, etc.)
  • Implement vertical scrolling for continuous reading
Show 2 more
  • Add text box annotation feature
  • Improve export/sharing options for annotated documents

In-app purchases

None

Right PDF Reader

No in-app purchases

None

PDF Cabinet

No in-app purchases

Questions

Is Right PDF Reader free?
Right PDF Reader is free to download, with no in-app purchases.
Is PDF Cabinet free?
PDF Cabinet is free to download, with no in-app purchases.
Which has better reviews, Right PDF Reader or PDF Cabinet?
Right PDF Reader is rated higher. Right PDF Reader averages 4.6 out of 5 from 5 ratings, while PDF Cabinet averages 3.8 from 56 ratings.
Do Right PDF Reader or PDF Cabinet have ads?
Neither Right PDF Reader nor PDF Cabinet shows ads.
Which is updated more often, Right PDF Reader or PDF Cabinet?
Right PDF Reader ships an update every 11 months, and PDF Cabinet every 5 weeks. Most recently, Right PDF Reader was updated on September 27, 2026 and PDF Cabinet on September 28, 2026.

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