A first in rugby, fans simply log on to the app before every RBS 6 Nations game to take part in a series of live predictive and trivia questions; once the whistle blows and the match ends, one fan will win the muddy ball used during the action.

Now in its second year, the RBS 6 Nations Live Challenge app responds to the live match action, allowing fans to have their say in-play on what will happen ahead of key moments in each game and enabling players to predict the result of penalties and guess where the kick will end up in conversions.

Trivia questions relevant to the match in-play also test rugby fans during the game. And with the new 2013 version allowing participants to win the match ball, the stakes have never been higher.

The updated RBS 6 Nations Live Challenge app will also feature new elements including an integrated Twitter function permitting players to tweet from within the app while also providing the collated views of rugby experts.

The RBS 6 Nations Live Challenge app is a must-have for rugby fans during the RBS 6 Nations. The app is available to download for free for iPhone, iPad and Android – fans can log in via Facebook Connect. Visit http://rbs6nationslivechallenge.com to download it today.