Xcode Organizer provides access to essential performance metrics such as crashes, energy impact, hangs, launch time, memory consumption, and app terminations. However, it lacks sufficient information to resolve certain issues, particularly app terminations. To address this, Apple introduced the MetricKit framework, enabling us to collect comprehensive performance diagnostics and build a detailed performance dashboard.

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MetricKit framework enables iOS developers to collect detailed app performance metrics beyond what Xcode Organizer provides. By subscribing to MXMetricManager, you can receive MXMetricPayload and MXDiagnosticPayload data containing information about app terminations, crashes, launch times, memory usage, and CPU resource limits. The framework delivers aggregated data on a daily schedule and provides JSON/dictionary representations for easy integration with analytics tools or custom APIs.

Monitoring app performance with MetricKit