Candy Crush Saga was the most downloaded app 2013, both Apple's App Store and Google's Play store. It was also the year's top revenue earning app. The game has been downloaded over 500 million times since its launch last year. Candy Crush Saga is the current favourite gamers. One addict, Deborah Alvarez, reckons she plays it least 10 times a day. She said: “I play it between breaks work, I go home, when I get home…It's addictive." Her colleague Katie Newell said she has successfully avoided playing the game. "I know too many people who have fallen prey to Candy Crush. I can't talk to them. I have to block invites to Candy Crush. It's a slippery slope," she said. Other top downloads 2013 include the photo and video-sharing service Snapchat. Craig Palli, an industry expert, said: "Snapchat went being a niche app to achieving much more critical mass, so much so that Facebook was reportedly willing to spend billions dollars to acquire the company." Mobile communications analyst Simon Khalaf believes 2014 could be the year when mobile apps seriously challenge the television industry. He said: "Every American spends $100-plus per month a service that is not personalized and not mobile. It's an area that's ripe disruption….Someone will come with new content, maybe a new device, and more importantly a better business model."