Installed on my detached garage, sitting about 40 feet from the wifi point, through an interior and an exterior wall of my house and the connection has been rock steady.
Image during the day is superb, good resolution, nice color. Night vision is not the most amazing, but it is more than adequate. Good enough to make out faces and details of clothing etc of anyone that may wander into view.
App was confusing at first but with a little time and effort playing with all the features and settings you come to learn rather quickly how to do everything it offers.
Set up cloud storage or block out motion sensor areas or limit motion alarms and notifications and on and on. Just spend the time with the app, have fun, learn.
I do wish there were a PC/Mac program so I could view from desktop but that will just have to be a dream for the future.
Overall, a great camera with a lot of features.