A different article suggested that phones with stock (or near-stock) Android (such as the Nexus 6) may have already been patched. This could potentially be a major issue with the more heavily skinned and/or older models due to the lag in (or complete lack of) an update to patch the vulnerability.
Gramps, that's what I use. I text from both phone and my tablet and both devices sync up. I downloaded the app for free onto my tablet. I tried other apps but Verizon works best for me