Profiling

Lesson in the React Native Roadmap · Stage 16: Performance

Last updated 14 September 2026

What is Profiling?

Use the built-in profiler to get detailed information about work done in the JavaScript thread and main thread side-by-side. Access it by selecting Perf Monitor from the Debug menu.

For iOS, Instruments is an invaluable tool, and on Android you should learn to use systrace.

Study this in the interactive course See the whole React Native roadmap

Free resources to learn Profiling

Official docsProfiling React Native

Profiling: common questions

Can I learn Profiling in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Profiling in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this Profiling tutorial for beginners?

It is lesson 91 of 94 in the free React Native roadmap, in stage 16, Performance. If you are new to React Native, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.