> I actually just switched to Duo Mobile earlier today because of iOS 7 issues with Authenticator; this just cements my decision to switch.
I moved all my non-critical stuff over (to test it out), saw the Google Authenticator update, and then had to go and reconfigure those accounts anyway.
I highly recommend making sure your backup phone number is updated and verified and/or you have backup codes prepped.
Luckily I was still logged into all my accounts (my Dropbox account suddenly dropped from Google's app like a week ago)
Duo seems to be quite nice, I doubt I'll end up using the backup codes.
Incidentally, GitHub has it right - "download a text file of your backup codes" is much easier than "print this page nad hope you don't lose it"; I find find(1) outpaces my frantic drawer-emptying.
Edit: oddly iOS 7 hasn't autoinstalled this yet.