Really green newbie

I am brand new at this . I have a matrice 4e. Does the Litchi pilot app reside on the controller. Each time I watch a tutorial it appears that missions are being planned on a laptop?

Is there a beginners guide to loading and using Litchi?

You can plan flights using any device at https://hub.flylitchi.com/

Then to execute them, you’ll need to install Litchi Pilot on the DJI remote controller: [OPEN BETA] Litchi Pilot