A number of manufacturers have developed an app designed to improve the user experience with your electric car. The Tesla app, for instance, guides you to a supercharger in your vicinity and enables you start and stop a charging session via your smartphone, so you can then follow the entire charging session in real time. But the app also allows to you to preheat the car, unlock it, and activate the horn so it's easy to find in a busy car park.
In terms of charging, Nissan's app, NissanConnect EV, is very similar to the Tesla app: it also allows you to start, stop, and monitor your charging session remotely. But you can use it to operate the air-conditioning remotely too.
Finally, the Z.E. Pass app by Renault allows you to search for charging stations and pay for a charging session in five European countries: Germany, France, Austria, Switzerland, and Belgium. Renault drivers who register can also charge at a discount rate.