- Which devices support HealthKit?
c) The iPhone and Apple Watch.
- What's the difference between a quantity sample and a category sample?
a) Quantity samples have an arbitrary value, while categories use enums to represent their value.
- How can you check whether you have read access to a certain health metric?
c) To protect the user's privacy, there is no way to be sure.
- How can you filter data that is returned from a HealthKit query?
a) With predicates.
- What permissions do you need to use a workout route builder?
c) You need permission for both the builder and the workouts.
- What do you need to keep in mind when you associate location data with a workout route?
b) You should make sure the location data is very accurate.