The document discusses using a mobile app to collect consumer retail transaction and social media data to correlate with mobile advertising campaigns and assess brand engagement in real-time. It describes how the JoopLoop app allows targeting consumers based on their profiles and spending, while Brand Keys provides brand engagement metrics shown to predict future behavior. The process seamlessly integrates these metrics to provide marketers immediate feedback on messaging effectiveness and consumer participation to optimize outreach and engagement. Case studies demonstrate how real-time brand engagement assessments can be used to recalibrate programs and increase sales.