Connecting with Apple Health allows the Project Breathe app to acquire data from a wider range of devices or services. This is great if you have an Apple Watch, or perhaps a spirometer or pulse oximeter that works with Apple Health. Some other services, for example Garmin or Strava can also supply data to your Apple Health account.
The Project Breathe app will download up to 7 days of data from your Apple Health account. This is exactly the same way in which the app works with Fitbit.
As well as Activity, Resting Heart Rate, Weight and Sleep, Project Breathe can read Lung Function (FEV1), Body Temperature and Pulse Oximetry data from Apple Health. This is great if you have medical devices that aren’t natively supported by the Breathe application.
Since health information is personal and potentially sensitive, any application that wants to read or update your Apple Health store requires your approval. The list of applications and/or devices that can access your Apple Health store can be controlled within Apple’s Health application.
Assuming you’ve granted Project Breathe access to read from your Apple Health store, you might also need to check that your preferences are setup correctly. In the ‘Settings’ page, choose ‘Data Preferences’ and make sure that the application is configured to retrieve data from Apple Health.
You can use both Fitbit and Apple Health simultaneously if you want, but you may might need to check out the ‘Data Preferences’ option in the application’s setting page. This preference page is where you choose which data points are retrieved from your different connected accounts.
Apple Health distinguishes between time you spend in bed, versus time spent asleep. Apps that track your sleep may record one or both of these numbers, but the Project Breathe application only reports the latter. Apple’s ‘Bedtime’ feature only records time spent ‘In Bed’, so if you rely on Bedtime to track your sleep, nothing will be reported in the Breathe app.