CUSTOMIZING HEALTH PROGRAMS BASED ON INDIVIDUAL OUTCOMES

In some implementations, one or more computers provide data for an application configured to provide interactive content personalized for a user of a mobile device. The one or more computers obtain activity data for the user for a current segment of the program. The activity data can include interaction data indicating one or more interactions of the user with the application during the current segment and sensor data indicating one or more measurements separate from user input to the application. The one or more computers identify a subset of content for the current segment based data indicating on a current track or level assigned for the user. The one or more computers cause a selected portion of the content in the subset to be presented on the mobile device in response to a determination, based at least in part on the sensor data for the current segment, that one or more triggers or conditions defined by rules associated with the current track or level are satisfied.