If Apple successfully handles EHR integrations & HIPPA, it will create a significant opportunity for developers to improve our healthcare system.
It's showing people neat graphs, which they'll rapidly get bored with because at the end of the day once you're even slightly away from reinforcing the feedback loop of "how much of a good person am I by proxy of my exercise/weight/calories?" no one cares and people specifically do not want to know.
Everything else about health is messy, full of legacy systems and liability, and completely facing away from the consumer.
Apparently, Apple is already integrating with Epic, one of the largest EHR systems out there. Preventive health is becoming a large opportunity and I think Apple is aspiring to become the main platform here.