Streaming video in app

Hello, first post here and excited & nervous about transferring from SmartThings to Home Assistant.

One big question - on the iOS app, can I display a screen of my 4 network cameras already streaming in real time upon opening the app?

I have old Hikvision POE cameras and their app was great that I could instantly see the live feeds with no delay and without clicking on them to enable a feed. My new house isn’t wired for external POE so I have to get wifi/wireless cameras. Thanks!