Ranked in these QuestionsQuestion Ranking
Pro Excellent compatibility with the PDF standard
Since Adobe is the creator of the PDF standard, it stands to reason that Adobe's Acrobat Reader has the excellent support for it.
Pro Acrobat can construct a font to match scanned content
Instead of simply trying to match the font to the closest available, Acrobat can attempt to construct a font based on other characters in the document.
Pro Integrated cloud service
Gives access to a cloud service that allows storage and sharing of PDF files.
Pro Clean interface
Acrobat has a three tab interface. There are home, tools and document tabs.
The home tab has recently used files as well as files stored in Adobe's cloud services. It will be the first thing shown once you start the program.
The tools tab includes access to all Acrobats functionality. From here you can add tabs to panels or use the search to look for tools.
Pro Touch-friendly interface for the desktop version
The interface has big enough button that they can be used on a tablet sized device.
Pro Search allows finding functionality
You don't have to look trough menus to find specific functionality, instead you can use search that's available in the sidebar and the tools tab to find the functionality you're looking for. You don't have to know the name of the tool either, related terms will work.
Pro Desktop app supports electronic signatures
You can both sign as well as send PDFs for signature.
Pro Allows converting MS Office documents to PDFs
You can use the create PDF tool to open any Office document and convert it to an editable PDF or if you're on Windows, you can access the same functionality in Office from the Acrobat tab.
Pro Video playback support
Flash and H.264 encoded video can be played back in a Adobe Reader.
Pro Allows comparing two separate PDF files for differences
Reader can compare two versions of a PDF file and highlight differences.
Pro Good OCR
Acrobat can recognize characters from both both scanned documents and photos of text. Even if the photos are at an angle.
Available on Windows, OS X, iOS and Android.
Pro Good annotation options
Acrobat allows commenting on text, highlighting text and leave audio messages.
Pro Can automatically detect form fields
Acrobat has a form wizard that will attempt to overlay appropriate form fields (single-line and multi-line text fields, checkboxes, radio buttons, etc.) over existing layouts.
Pro Allows getting notified when recipients view or download a file
You can use the document cloud to get a shareable link to any of your documents. And it's possible to get notified when a document cloud document gets viewed and/or downloaded.
Pro Allows real-time collaboration
Since version 9, Reader supports real-time collaboration that synchronizes documents and includes chat.
Con Very expensive
While there's a free version of Acrobat Reader, it does not allow editing. There's a choice of Standard edition that costs $299, and Pro version for $499.