Waste of time, all of them. My VW looks to be ok at booking a service, but showed me incorrect information that didn't match what I got when I called up the dealer.
I was excited to have all this connectivity, but was turned off when I found out it was in 3 or 4 different apps. Why?! I'd like just one app for my car.
Anyway, when I found out they were all trash I just gave up anyway.
Now if you have a GTE or an e-Golf, you can preheat the car etc. That sounds more useful.