Hi. I'm using Android and my girlfriend is using iPhone. She scans the business cards and sync to my Evernote, so I can see the cards in Android. And I'm meeting the same problem : how to add the scanned business cards into my Gmail account? Well, there are something really strange, every now and then I can see the button of "adding to Contacts", but most of the time the button is missing. I don't know what happened? Or what happens? Why is it not a constant function? But I can see that in the desktop version of Evernote, I can find the button in the "sharing" list.
Evernote is a good software except for the contact sync problem.