Please confirm ... NitoTV differences between ATV1 and ATV2

I’ve recently added nitoTV to both my ATV1 and ATV2’s.  But it seems they aren’t the same thing.

Can someone clarify please to see if I understand correctly?

On an ATV2, nitoTV is an interface to add and manage plugins.

On an ATV1, nitoTV is a way to stream to the ATV1? (I don’t see the same menu option for adding more plugins).