React Native UI profiling docs: now with information about iOS profiling#16260
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React Native UI profiling docs: now with information about iOS profiling#16260
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antonis
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Feb 4, 2026
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| Profiling for React Native is available in SDK versions `7.9.0` and above. Android is currently the only supported platform, and support is still experimental. | ||
| UI Profiling for React Native is available in SDK versions `7.9.0` and above. Android support was added in `7.9.0`, and iOS support was added in `7.10.0`. This feature is still experimental. |
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nit
Suggested change
| UI Profiling for React Native is available in SDK versions `7.9.0` and above. Android support was added in `7.9.0`, and iOS support was added in `7.10.0`. This feature is still experimental. | |
| UI Profiling for React Native is available in SDK versions `7.9.0` and above on Android. iOS support was added in `7.12.0`. This feature is still experimental. |
antonis
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Feb 4, 2026
antonis
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Left a comment related to the iOS version and a nit suggestion. Other than that LGTM 🙇
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LGTM 🚀
Let's wait for the release tomorrow and merge it
![sentry[bot]](https://avatars.githubusercontent.com/in/12637?s=60&v=4){kind=small}
Comment on lines
+86
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90
| profilingOptions: { | ||
| profileSessionSampleRate: 1.0, | ||
| lifecycle: 'trace', | ||
| lifecycle: "trace", | ||
| startOnAppStart: true, | ||
| }, |
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Bug: The documentation suggests startOnAppStart: true works for iOS, but this option is not supported by the native iOS SDK and will be silently ignored.
Severity: MEDIUM
Suggested Fix
Update the documentation to clarify that startOnAppStart is an Android-only option. Provide separate configuration examples or add a note explaining the platform-specific behavior within the unified example.
Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.
Location: docs/platforms/react-native/profiling/index.mdx#L86-L90
Potential issue: The documentation provides a unified `profilingOptions` configuration
example that includes `startOnAppStart: true`, implying it works for both Android and
iOS. However, this option is only supported on Android. The native iOS SDK for UI
profiling does not have an equivalent option. As a result, when developers use this
configuration for an iOS application, the `startOnAppStart` setting will be silently
ignored, and profiling will not begin on application launch as expected. This creates a
discrepancy where a documented feature fails to work on one of the supported platforms
without any warning or error.
Did we get this right? 👍 / 👎 to inform future reviews.
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The support for iOS UI profling was added to React Native SDK: getsentry/sentry-react-native#5611
Now it's time for the docs changes!
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