The MyFitnessPal Go project by Matt Ho includes a library with food diary. Useful to retrieve macro intake for today and retrieve macro intake for a specific date. MyFitnessPal is an application that tracks the progress of users who are committed to changes in diet and exercise. The API is private and available on the MyFitnessPal site.
RunKeeper, a maker of health and fitness tracking software, has made its Health Graph API available to the public after a closed beta with a small group of developers. The new API provides access to RunKeeper Health Graph -- a system of individual health connections that create digital map of an individual's personal health. The Health Graph provides a record of the evolution of an individual's health, including a snapshot of their current physical condition, how this has evolved over time, and how social interactions may have influenced activities and behaviors.
How Are You? Is a UK-based application that provides a free service for NHS patients and NHS healthcare professionals, enabling them to create personal online health records that can be easily managed and shared where necessary. This kind of application has the potential to greatly enhance and improve the future of eHealth, and by providing the How Are You API, the service makes it possible for its handy functionality to be accessed and integrated with other applications.