I just tried installing the Just Dance controller app on my Android smartphone. It was a pretty straightforward process. It asked for the console (available are PS4, Xbox One, PC) and the versions (2017 up to 2015).
Upon finding out that the 2014 version isn't included, I clicked on the "?" button. It then said
Sorry but this application does not ...
According to Uplay's about page you can earn Units while playing games which you can exchange for in-game or real life rewards.
This page says that on the Xbox 360 you can earn (Click on the XBox 360 logo):
Follow the leader sweat version
Just Dance 2014 Theme
Just Dance 2014 Avatar
Fine China - Dance Mash-up