The new 2015 X Factor App is your essential companion to the brand new series. Download now to vote for free and play-along live with the world's biggest talent show.
Take your place as The Fifth Judge to make predictions, test your X Factor knowledge and rate the performances in real-time during each show.
The fun continues all week long with exclusive extras, breaking news and the best performances from all of your favourite acts.
NEW: Vote for your favourite 2015 X Factor contestant for free. Play games and unlock exclusive extras. Plus, add the contestants you love to the top of your favourites list.