remote app

I have an Hikvision OEM NR32P4-4 NVR ("Hikvision Comparable Model Number: DS-7604NI-K1/4P") along with 3 hikvision OEM cameras are plugged into my NVR. Currently the camera record onto the hard drive of the NVR, and that's it. I do not have anything stored in the cloud. I also use an app...