Hi I'm using the PDF viewer in Google Drive to open a PDF that I created using the scan function to Google Drive. If you only have the basic version of Evernote you have to pay for Skitch in order to annotate PDFs it's a $2.16 purchase in app. I am using my Android phone.
I just purchased the annotate tool by skitch for PDFs on Google drive. Using on my OnePlus 3 android. When I annotate I select done but the annotations don't save. Or if they do elsewhere I don't know where to find them. Hope someone can help.