A companion app is a software program that is designed to work alongside or complement another main application or device. It provides additional features or functions that enhance the user experience or provide extra convenience. Full definition
In addition to this, can you guys please update the headset companion app for the the people who bought the Platinum headsets like myself? (blog.us.playstation.com)
The publisher features the free companion app on page one of the book and the quick registration process enables publishers to make the direct connection with their readers. (jwikert.typepad.com)
All players need to do is download the free companion app on their mobile devices and they're all set! (blog.us.playstation.com)