This is a NativeScript plugin that abstracts Apple HealthKit and Google Fit to read health data from the user's device. Google Fit API Key - Go to the Google Developers Console, create a project, and enable the Fitness API. Then under Credentials, create a Fitness API OAuth2 client ID for an Android App (select User data and press the What credentials do I need? button). If you are using Linux/maxOS, generate your SHA1-key with the code below.