I have an android phone and I downloaded "UVO Eco" from Google Play to work with my 2018 USA PHEV. There were some other UVO Apps on Google Play that I did not download, but it was a guessing game as to which App I should install. I think I picked the appropriate app for my car, but still not 100% certain.
The UVO Eco app displays a top level of three tabs named "Remote", "Stats", and "Locations". Each of those top level tabs has some number of sub tabs. For example, the Remote Tab has three sub tabs named "Climate", "Security" and "Battery". The Top Level "Stats" tab has sub tabs named by month of the year that show my "driving score" for that month. The top level "Locations" tab has three sub tabs for "My POIs", "Charging Stations", and "Trips".
In addition to the top level tabs, there is a menu that offers "Car Zone Alerts", "Maintenance" and "Roadside Assistance". The CarZone stuff is about keeping tabs on someone else (like your kids perhaps) driving your car. It appears to be able to alert you when the car is used after curfew, outside of a "geo fence" area, if a certain speed is exceeded, or if you hand your car over to a valet and they abuse your trust (assuming you figured out how to set up any of these features beforehand). I haven't attempted to use any of the CarZone features.
My (rather limited) experience so far is that it was slow to connect, I was able to remotely turn on the AC, but I don't anticipate using the remote AC feature very often because it takes so long to connect. In other words, it was kind of cool to play with this app for a few days, but after that, I've started to contemplate that it doesn't seem to have much value and maybe I made a mistake to agree to the terms of service, because it feels kind of creepy to have Kia's web site knowing this much information about my driving habits.
2018 Niro PHEV Gravity Blue