The Auping Connect app can easily be installed on multiple devices. Download the app on another phone or tablet. It must be connected to the same Wifi network as Auping Connect.
Then open the app. The app will then find the installed Auping Connect and ask for an authorisation code. The first person to install Auping Connect can find this code under Settings -> Share. Enter this code and Auping Connect is ready to use.
Go through these screens on phone 1.
Go through these screens on phone 2.