MetricKit updates

Overview

Browse notable changes in MetricKit.

June 2026

Metric manager

• Adopt MetricManager to receive metric and diagnostic reports through asynchronous sequences. MetricManager replaces MXMetricManager and its subscriber protocol. For an overview of the MetricKit reporting model, see Monitoring app performance with MetricKit.

• Receive daily aggregated performance data through MetricReport, which conforms to Codable and Sendable for straightforward serialization and safe cross-actor use.

• Receive event-based diagnostic data through DiagnosticReport. Handle each metric type using MetricResult. For information on working with metric values and diagnostic data in MetricKit reports, see Analyzing app performance with MetricKit.

State-contextualized metrics

• Use the StateReporting framework with MetricKit to segment performance data by app-defined states in addition to intervals. For information on integrating the StateReporting framework with MetricKit, see Getting started with StateReporting.

See Also

Technology and frameworks

• Accelerate updates
• Accessibility updates
• ActivityKit updates
• AdAttributionKit Updates
• App Clips updates
• App Intents updates
• AppKit updates
• Apple Intelligence updates
• AppleMapsServerAPI Updates
• Apple Pencil updates
• ARKit updates
• Audio Toolbox updates
• AuthenticationServices updates
• AVFAudio updates
• AVFoundation updates