So I can into ST with the new app, but as I add new things and whatnot, I start moving into things like SmartApps. That said, SmartApps are not part of the new app from what I see. I had read that there are some who use both. If in doing so, does and should all sync up correctly and all? Anything to note?
Honestly? Stick with Classic unless you have a Samsung appliance that requires the new app.
You can use both. I use both since
I like the custom automation creator in the new app. Just know the differences: