Why isn't my menstruation data from Apple Health syncing?

Exist will ignore any data created with the app Clue, because it employs poor practices when syncing to Apple Health. We've informed the Clue team of our concerns and will sync data from Clue if the situation changes in future.

Exist will also ignore any data that doesn't include a light, medium, or heavy bleeding value. If you're using an app to sync data into Apple Health, check your raw data to make sure the app is using these values (if you see "unspecified", that data won't be synced to Exist). If you're entering data directly into the Health app on iOS, make sure you choose light, medium, or heavy when tracking menstruation so Exist will sync that data for you.