A free app for Android, by Ring.com.
You can watch over your home from anywhere with the Ring app for iOS. You’ll be notified of any activity with a notification on your iPhone, iPad, or Mac. You can view, hear, and speak to visitors in real-time.
It works with the Ring Wi-Fi connected video doorbells and security cameras, so you can watch over your home from anywhere. It works on iPhone, iPad, and Mac.
You can also review and manage alerts and see what’s going on at your house. If there is an event you’d like to know about, you can set up the device to send you an alert.