The SkyBell HD app is a completely new app separate download in app store from the past models and is lightyears ahead and finally a “modern” app that works. We no longer worry about package thefts!Since installing the new HD model, I have had numerous conversations with neighbors through the SkyBell HD and I have even been able to tell solicitors to go away from my desk at work miles and miles away!Even better, I have been able to notify my neighbors when packages are delivered so they can pick them up while I am out of town. I love my SkyBell HD!I highly recommend this product. More detailed review below. HardwareFirst off, this device is sleek, nice looking, and ROCK SOLID. The connectivity and wireless range on it is great when compared to previous and competitor models. I did not feel worried about breaking it during install because when you hold the device you can tell it is manufactured well with durable materials. In the past, all other doorbells to this point felt dinky and plastic not to mention that most were ugly. As for the WiFi connection, this works great. You will need to use a 2. 4Ghz WiFi which makes total sense because the signal has to get through exterior walls to the doorbell 5Ghz doesn’t travel as far or through walls as well.