Live Link Face - do you need Live Link?

So I saw you guys released a facial mocap plugin back in July, though I’m unclear about all the prerequisites. I am planning to trade-in my iPad Air for the newest generation, since my current hardware cannot run iOS 13 or over.

I also don’t have Unreal Live Link, so still need to purchase Reallusion 3DXchange as well, as this is a requirement for Indies to access the real-time plugin…

Is Unreal Live Link actually needed for Live Link Face to work, or can someone run it without until they can buy 3DXchange?