The document discusses how apps have changed consumer behavior and reports on research about app adoption and abandonment. Some key findings are that apps provide entertainment, utility and information; consumers are more likely to adopt free apps that have positive reviews but will try paid apps if they have free versions or are inexpensive; entertainment apps tend to be replaced more when consumers lose interest or find better alternatives, while gaming apps are equally likely to be replaced or deleted for similar reasons. Fun, usability and constant new content are important for sustaining long-term app usage.