About to get my first plug-in car, and have some questions.

I work in the software industry so I know that all apps eventually get discontinued or abandoned, so what happens to my home EV charger when the app it needs is no longer available?

Are there generic home EV charger apps that work with other brands chargers?

Can I just not install the app? I'm not saying I'd avoid installing it, but knowing how the charger would behave in this scenario is important information.