Downloadable mobile applications and downloadable end-to-end software for exchanging communications and evaluations between patients and health care providers and monitoring patient health data; downloadable mobile applications and downloadable software for patients for the purpose of tracking and monitoring patient activity by healthcare providers; downloadable mobile applications for patients to access personalized prevention interventions; downloadable mobile applications for use by health care providers and patients to facilitate shared decision making; Downloadable software in the nature of a mobile application for use with biometric medical devices attached to patients for tracking associated biometric medical devices on behalf of their provider; medical weighing scales; wearable activity trackers; Downloadable software in the nature of a mobile application for providing data analytics associated with a wearable activity tracker, and for providing health data and social data of a user of the wearable activity tracker