IcRealtime is Dahua based. Like Snap, you will pay quite a bit more for the same gear as regular Dahua stuff. I find Dahua and Hikvision apps to be on the same level as far as use and ease. With Hik, when you set his app up, it will open to his cams. With Dahua, you have to press on the favorites button, which you'll have to setup, and then select his system. I find Dahua app easier if using multiple sites, but for a single location, I have found people like when the app opens to show cams without having to do anything.