Tracking the YouVersion
“As YouVersion became increasingly popular, other publishers also came to view the app as a positive force — less a threat than a marketing opportunity. Although there are no ads on the app and no plans to create any, Mr. Gruenewald said, YouVersion collects vast amounts of data on Bible readership patterns. That trove of data provides valuable information about the habits and preferences of Christians that YouVersion selectively shares with its traditional publishing partners, such as which verses are the most popular within their own translations.”
"App Puts the Bible in 100 Million Palms" - http://nyti.ms/19nbZy5