WWDC26: Meet the new MetricKit | Apple
Apple rebuilt MetricKit from the ground up in iOS 27 with a modern Swift-first API for app performance monitoring.
“In iOS 27, the framework has been rebuilt from the ground up with a contextually rich and expressive modern Swift First API.”
At WWDC26, Apple announced a rebuilt MetricKit framework in iOS 27 with a new Swift-first API for collecting app performance metrics and diagnostics. This is a developer tooling update for app performance monitoring with no meaningful AI industry signal.