It crashes all the time in OS X 10.10 with latest updates.

I wanted an app that lets you embed highlights as annotations in PDFs like you can do with Acrobat and Preview. I wanted to highlight more easily than in Acrobat and Preview - something as easy to do as in the open-source app Skim. Skim doesnt embed highlights unfortunately in the current document. You can only do that in Skim by exporting the PDF as a second document.

PDF Reader Pro FREE is a lot like Skim - perhaps using Skims opensource. But it embeds the annotations in the file itself like Acrobat and Preview. Thus it has promise.

But it fails on crucial areas so I do not recommend it:

1. It crashes frequently, repeatedly, and often after trying to save a PDF after making ONE highlight in OS X 10.10.2 - the latest version as of 03/19/2015. This is unacceptable. I seriously doubt the Pro version can do any better. And I certainly wouldnt want to pay for it if the crashes are this frequent.

2. It doesnt have the highlight colors available at all times like in Skim so you can instantly select the color you want.

TWO-STARS for having potential but failure in the execution.

Marianco about PDF Reader Pro: Convert & Edit