Open AutomowerConnect App on your Android phone from within Home Assistant

The service dev tool allows you to call any available service in Home Assistant. Go to Developer Tools -> SERVICES

service: notify.mobile_app_<your_device_id_here>
data:
  message: "command_launch_app"
  data:
    package_name: com.husqvarna.automowerconnect

This will open the Husqvarna Automower Connect App on an Android phone if you have the Home Assistant Companion App installed and have given it the right to open other apps.