Agree 100%, I WANT to stop using SMS based 2 factor auth, BUT problem is, even those offering Google/Authy/Other App based 2 factor, they ALSO have a SMS backup, so the attacker could just ignore the app based option, and click the option to use SMS, or use recovery options, which are often just a fallback to SMS or…

Im not on Yosemite yet, im on 10.9.5 Mavericks and it works fine for me. Sending lots of messages through it already. Perfect!