[dragonwriter]

> If he were diabetic, I wonder, would he use an iPhone application to measure his blood glucose levels, or the MD

Actual diabetics I know do occasional in-office tests, but for routine testing use at-home personal testing kits, which one could easily imagine syncing to devices and online services the way personal fitness trackers do. With severe diabetes, you need monitoring more frequently than is practical with in-office-only testing.