A rule of thumb: if you don't have a SIM slot somewhere in the dashboard, your Audi does not support rSAP.
well, that's not correct. Many A4 with MMI 2G don't have a SIM card slot and still have rSAP built in.
First of all, the Note 3 supports rSAP out of the box. My app will most probably not make any difference.
It makes a HUGE difference. Samsung's own implementation doesn't have contacts from Phonebook (only SIM) and is very unstable. In my case, the connection breaks at least once every hour.
So for me this two apps are a "must-have".