Health is a standard software feature of Apple 's iOS mobile operating system
as of version 8 from autumn 2014 and is used to evaluate health and fitness data. As an app, Health collects the vital signs of measuring devices from different manufacturers that are connected to an iOS-enabled end device
and combines them into a uniform display on a dashboard. Using an iOS-enabled device, users can view their current and past heart rate, calories burned, blood sugar levels or cholesterol values and manually add their own information, such as blood group or allergies. Health Kit is a software framework for developers who can use it to connect different health and fitness apps and display them in the Health app.