Blahnik was instrumental in developing Apple's fitness and health features across the Apple Watch and iPhone, helping to build out the Fitness app, workout tracking capabilities, and the Apple Fitness+ subscription service.

The New York Times report noted that Blahnik had been accused of harassment, adding context to the departure. Apple confirmed the retirement but did not elaborate on the circumstances.

Blahnik's exit removes one of the key figures behind Apple's health and fitness strategy, which has been a central pillar of the Apple Watch's identity since its launch.