Would this Hikvision have access via a phone app, or is it only accessible via the web?
Yes, you can set up the NVR to allow port forwarding so you can view cameras via the mobile app.
Would you be able to view cameras when on the go?
As above
Is motion detection and motion zones part of the camera or the NVR?
I'm not too sure about this but I would guess it's part of the software on the NVR
Would this NVR only record when motion occurs or does it record contentiously?
You can choose either motion detection or contiunous recording