Google Duo – Audio Calling
Duo is a easy way to communicate via video with friends and family on Android and iOS. With the latest update, you will also be able to voice call. This will be a nice update, particularly for situations where you are in a public area or have limited bandwidth.
Google Allo – Sending Files
Allo is a great way to communicate with friends. Since its launch in September, it has continued to add new features, making the app more and more useful. Today Google updated the app to enable file sharing, I don’t have much use for that feature now but it will be nice once they enable Allo on the Desktop. The next step is to allow Allo to be my default SMS client.
source – The Keyword (Google Blog)