HealthKit is a powerful tool if you want to create an iOS mobile app based on health data. However, it’s not only for body measurements, fitness or nutrition; it’s also sleep analysis. In this HealthKit tutorial, I will show you how to read and write some sleep data and save them in Health app.

UPDATE - April 2020: Originally written for Swift 1.0, then 2.0, I’ve updated this post for latest Swift 5.1 version and Xcode 11.3.

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Benoit Pasquier

Software Engineer πŸ‡«πŸ‡·, writing about career development, mobile engineering and self-improvement

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