Here are my observations: both cooling and heating the cabin, BOTH are VERY flawed, and we should not be forced into doing "hacks" ourselves, this vehicle should perform properly with factory parts/engineering.
HEATING
Conditions. (cold start or full operating temp)
Example 50+- degrees exterior ambient temp.
78 degrees set interior temp on the screen
Ice cold air will blow through the vents until raising temp to FULL HI HEAT, no other setting below HI HEAT will shut off the ice cold vent air. Upon pushing the temp button to HI HEAT, if the vehicle is up to operating temp, the vents will shut off and no cold air will blow, and heat will blow from the foot-well, however if you attempt to lower the temp by even as minor as 1-2 degrees, the system will revert back to ice cold air being blown through the vents, you will need to continue to toggle back and forth to eventually get the system to adjust and get the temp comfortable in the cabin, it really should not be this hard to get a comfortable temp.
COOLING
Conditions (cold start or full operating temp)
Example 90+ degrees exterior ambient temp
70 degrees set interior temp set on the screen
The system will NOT get very cold, almost lukewarm in my opinion, the only way to get appreciable cold air is to go the complete opposite as above, and place the system in MAX A/C, the system will put the blower on very high and will produce a reasonable colder temp, but not real cold like any other system in any other vehicle (past RAM1500, my BMW’s, Mazda, Range Rover, Cadillac), which will all freeze you out of your mind at any setting under 70 degrees, where this truck barely makes a dent in the coolness of cabin temp, all the while having the blower blowing full speed which is really annoying when trying to hold a conversation, or speak to a client on the phone, ALL THE WHILE SWEATING PROFUSELY UNTIL THE CABIN GET A "LITTLE COOLER". NO other vehicle I have ever owned or rented for that matter has ever had a HVAC that acted this way. I fear that next week when I take my daughter to Arizona to start school, the system will not keep up in the Arizona desert. My old Ram 1500, or any other vehicle for that matter would have turned me into an icicle in the desert sun if the A/C was set too low. The bottom line, is this new system does NOT get cold.
Coupled with this, is the fact that the app is so limited in function, it also does not allow you to set a cabin temp (hot or cold) like all other vehicle mfgs, in my opinion, this app is completely useless.