Summary
Great! You have learned a new framework that gives information on the user's health. You can now query the phone, which requires you to convert the result into a quantity with a unit. It is done this way because a measure is a measure, it doesn't matter which unit is used.
You also learned, in this chapter, how to use the iOS-Charts framework, which allowed to display some charts of the user's progress, something very common in health apps.
In the next chapter, we are going to create our own game using the SpriteKit framework.
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