It is an interesting question and one that I have not thought of. Because I have many notebooks (1 for each project) I have not really focused on where it opens up. I tend to work across a number of notes and a number of notebooks and also a number of views. I always find my goto location is back home and if I am reopening Evernote for starting the day, I always click the home button irrespective if it is my iPad or MacBook or Mac, I will see what happens with each of my devices an report back