Hikvision cameras are DVR’s needs?

Hi, I have a couple of up cameras that I use to watch my Merlins (Small birds of prey) in their aviaries. I don’t have any sort of DVR as I don’t record anything, just watch live view so I just get their ip address, port number etc and can watch them via apps on my mobile, laptop or on my large tv through my Firestick.
Do any of the Hikvision cameras work this way or will I need some kind of DVR to connect them to?