Very convenient, I use it all the time.

iPhone 6S: The app does a great job communicating and controlling your car, much faster in this release. Though, its missing a few nice-to-have features like;

Today screen integration.

Touch ID to access and start the car. (You can start it by typing in the password.)

Trip planning from the app.

Todays screen integration (iPhone) to do basic stuff.

Ability to see trip mileage and consumption.

Raise/lower suspension.

bradhs about Tesla