PDiff Express

Comparing two or several PDF files is a common thing in daily work. PDiff Express is a great productivity app that can help you find the differences between two PDF doucments. What you need to do is to drag and drop the two versions of PDF files into the app, and then you can find the differences with high lights, including the text, fonts, layout, hyphenation or even page breaks.

Pros:
What this PDiff Express app can provide for you:
- Various types of PDF files can be compared such as office documents, technical manuals, legal texts and business contracts, financial reports, fictional books and non-fiction books, etc.
- Fast and reliable PDF text comparison for multipage documents;
- All the differences in the PDF files can be shown in hilighting color.
- Supports quick view and navigation of the differences in PDF files with thumbnail widget.
- Support full text search functions.
- Nice GUI designs that support splitting separate windows to work in dual monitor environments.
- Support English and German in the app.
Cons:
- Free versions only support three pages ((max. 1000 words)) PDF files comparision.
- If you need to compare more files, the in-app purchase is required.