> For the complete documentation index, see [llms.txt](https://docs.luciq.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring.md).

# Application Performance Monitoring

- [Instrumentation](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/instrumentation.md): Learn how Luciq instruments your mobile app for performance monitoring. Understand automatic tracking and how to add custom instrumentation.
- [Metrics & Dimensions](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/metrics-and-dimensions.md): The metrics and dimensions behind Luciq APM, starting with Apdex, so you can compare transaction performance and set improvement targets.
- [SDK Debugging](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/sdk-debugging.md): Use Luciq's SDK debugging tools to troubleshoot APM issues in your mobile app. Access detailed SDK logs and diagnostic information for performance debugging.
- [App Launch](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/app-launch.md): Monitor app launch performance with Luciq APM. Track cold, warm, and hot launch times for your mobile app to optimize startup speed and experience.
- [Network](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/network.md): Monitor network requests with Luciq APM. See per-URL Apdex scores, latency, and both client-side and server-side failures for each pattern.
- [UI Hangs](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/ui-hangs.md): Luciq captures UI hangs automatically when your app stops answering input for more than 250 ms, grouped and aggregated by screen name.
- [Screen Loading](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/screen-loading.md): Monitor screen loading performance in your mobile app with Luciq APM. Track how fast screens load, identify slow screens, and optimize user experience.
- [WebViews Screen Loading](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/screen-loading/webviews-screen-loading.md): Monitor WebView screen loading performance with Luciq APM. Track how fast web content loads inside your mobile app's WebViews for better performance insights.
- [Flows](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/flows.md): Flows measure how long users take to finish key journeys, with completion and drop-off rates, root causes, and the crashes involved.
- [Flows Apdex](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/flows/flows-apdex.md): How Luciq scores a Flow with Apdex, how satisfying, tolerating, and frustrating occurrences are classified, and how drop-offs are counted.
- [Screen Rendering](https://docs.luciq.ai/product-guides-and-integrations/product-guides/application-performance-monitoring/screen-rendering.md): Find the spans that correlate with slow and frozen frames on a screen, so you can pinpoint the likely root causes of rendering problems.


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