Which ring app???

Hi Folks, 1. Just bought a Video Doorbell 2. The instructions say to download the Ring app and some direction also show a doorbell icon at the App Store. There is no Ring app, there are many Ring apps and none show a doorbell as pictured in video instructions. There is "Neighbors by Ring", a New "Neighbors by Ring", and "Ring - Always Home". So which one should one download to setup the video doorbell? 2. We currently have a wireless chime doorbell. This is an IQ America WD-2044-ACGPI model. Can the be linked to the Video Doorbell 2? I will be installing the app on a IPhone 10 plus and IPhone 7 plus. TIA