Candy Crush - the world's most popular mobile phone app?

An article discussing the success of Candy Crush.  Interesting to think what impact this might have on the video game industry?  Do people like this game because they can play it on all different platforms - phone / tablet / facebook and still save their progress?

http://www.dailymail.co.uk/sciencetech/article-2324228/Candy-Crush-Saga-overtakes-Angry-Birds-WORLDS-popular-game.html