These two apps have been extremely unreliable. I have a Google Drive folder with bunch of stuff in it but GDrive just keeps searching and searching and Google Drive app just says "no items in this folder".
I tried Google Drive for a short time, but I read that it sometimes doesn't sync or upload media properly so I switched back to DropBox. I also like how the DropBox app isn't limited like Google Drive's. I had to go to Google's website on Safari to make files public.