I like it enough but...

the problem I have with this PDF reader might have to do only with OS X El Capitan. I wanted to set it as default for all my PDF files but it always prompts the message that this application is from an unrecognized developer so I need to go to security and privacy everytime that I want to make any specific PDF file open as default with this app. If not, I have to open such PDF using right click which is a pain. Other than that, is mostly better than the Apple PDF reader.

Drifter about PDF Reader: Viewer Edit Sign