Social interaction is an important part of everyday life, but it is difficult to study in an ecologically valid environment. The goals of this project are to integrate scientific know-how about social interaction, physiology, and overall well-being into a unified platform for social and behavioral wellness. We are developing and testing a smartphone app that uses commodity wearable hardware to provide actionable feedback to the user on the physiological changes enacted by their day-to-day behaviors, especially in the context of social interactions. Specifically, the app will use state-of-the-art individualized modeling methods to integrate wearable data streams, interaction tracking, and emotion rating in order to detect, report on, and ultimately intervene into the way that contextual characteristics and social interactions influence the everyday well-being of its users.