Allow the app to schedule activation of climate control (i.e. heat and cool) at a specific time each day of the week. This would allow having the car at a temperature when leaving in the morning. The schedule should allow for each day of the week (i..e typically Monday to Friday).
A plus is an option to specify how long climate control should run (i.e. 5 minutes to 60 minutes) before automatically shutting off if the car is not opened.
A second plus would have the option to ignore turning on Climate control on the schedule if the vehicle does not have land power (i.e. plugged in).
The Nissan Leaf has a climate control scheduling option.
Visible Tesla offers scheduling via a PC or Mac.
Tesla implemented automatic pre-conditioning as an option where it turns on climate. It learns your typical departure time and adjusts the cabin and battery temperatures if needed.