Zwift o Companio?

I use Zwift on my PC, but I downloaded Companion on my phone. I want to use only my phone, do I need to download Zwift too? Or do I just leave companion?

When you’re using Zwift on the PC, you should have only Companion installed on the phone. When you’re using Zwift on your phone, it can’t reliably run Companion at the same time. Also if you switch back and forth between the PC and the phone for running Zwift, you must make absolutely sure that the app does not continue running on the phone. You can’t just swipe it into the background, you must terminate it.

Allora lascerò Zwift Companion sul telefono e non scaricherò altro. Giusto?

Correct.