- Have you ever played popular mobile games like Angry Birds (Figure 7.11), Draw Something, or The Sims FreePlay? Media research firm Nielsen (2011) reports that games are the most popular mobile apps in the U.S. ---While many apps in this category are free, 93 percent of app downloaders are willing to pay for game apps, compared to 76 percent for news apps, another popular category - Flurry, a mobile app analytics firm estimates that downloads for iOS and Android phones alone, produced revenue of $800 million and $1.9 billion in 2010 and 2011, respectively, an increase of 137 percent in one year