IPCams NVR requires an Apple TV or Mac running on your local network to run and monitor your cameras. By running locally, IPCams can detect motion immediately and provides a level of security unavailable by cloud offerings.
Option 1: Apple TV
Option 2: Mac
IPCams NVR can run on any Mac in the background while you are using other apps. The Mac needs to stay awake though, so it's best to disable sleep to allow IPCams to run 24/7. When IPCams NVR is running, IPCams will stay awake in the background but can be quit by using the quit option from the status bar icon.
IPCams NVR can work over WiFi but for the best performance, IPCams NVR works better when your Apple TV or Mac is hardwired via ethernet to your network.
IPCams NVR doesn't currently have a have a camera limit per NVR, but it's good to note that some hardware can handle more cameras than others. For example, a more powerful and modern Mac, can handle more cameras than an older Apple TV. If you run into issues with running too many cameras on one NVR device (app crashing, running out of memory or space), you can always add an extra and spread the monitoring load between multiple NVRs.