Yeah, please do. I hear all my friends talking about the Companion App, that it always comes in handy to quickly move some thing from or to your vault, etc etc...
I'm not the kind of person that'll buy another smartphone, just to have the app.
I have to say this though; since you moved away from Microsoft, you have let down to the people that prefer Xbox One over PS4. I'm sure you have lost a lot of followers ever since.
Sincerely,
One who still believes it's possible