Transferring SYNC audiobooks from iPhone to mac

[Nancy]

I recently downloaded a couple of the free SYNC audiobook pairings to my Overdrive app on an iPhone, not thinking about how big the files would be. Now I would really like to get them off the phone and on to my Mac for storage until I am ready to listen to them. I can find instructions on how to transfer audiobooks from the computer to the phone but not the other way around. Anyone been able to successfully transfer an overdrive app audiobook to your computer from an iPhone?

[❤Marie]

I would like to know this also for Android.

What I've done so far to save space on my Kindle Fire is to delete the files which keeps the book on my Overdrive bookshelf and then when I am ready to read it, I download the files again.