--- title: Monitor your Unreal Engine mobile app source: https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile-unreal-engine/monitor-your-unreal-engine-application --- Our New Relic Unreal Engine Plugin monitors your Unreal Engine mobile app and provides deep insights into your app's performance, errors, and user experience. Once you install and configure the Unreal Engine Plugin, you'll be able to: - **Capture C++ errors**: Quickly identify and fix problems. - **Create custom events and metrics**: Understand how your users interact with your app. ![Summary view of a Unreal Engine app in New Relic](https://docs.newrelic.com/images/mobile_screenshot-full_hybrid-summary.webp "Unreal Engine summary view in the UI") **[one.newrelic.com > All capabilities](https://one.newrelic.com/all-capabilities) > Mobile > (select an app) > Summary**: View Unreal Engine data, and errors, and monitor how your app is performing over time. ## Manual installation [#manual-install] If you need to install the plugin manually, follow the steps below. ### Review the requirements [#requirements] Before you install the Unreal Engine Plugin, make sure your Unreal Engine app meets these version requirements: - For Android-native apps: - Android API 24 or higher - See [Android-native requirements](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile-android/get-started/new-relic-android-compatibility-requirements) - For iOS-native apps: - See [iOS-native requirements](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile-ios/get-started/new-relic-ios-compatibility-requirements) ### Add the agent to your project [#add-agent] 1. In your project's root directory, create a folder named `Plugins`. 2. Copy the [`NewRelic` folder on Github](https://github.com/newrelic/newrelic-unreal-plugin/tree/main/Plugins/NewRelic). You should have something like ``` MyProject └── Plugins └── NewRelic └── NewRelic.uplugin ``` 1. Click **Restart Now** to continue with additional configuration. 2. To allow interfacing between the agent and your C++ code, add `NewRelic` to the list of dependencies in your game module’s `.Build.cs` file: ### Add application token(s) [#app-token] To authenticate your Unreal Engine app's data with New Relic, add your application token(s) using one of these options: - In your project settings under **Plugins → NewRelic**, paste your app tokens(s) in the **New Relic App Token field(s)**. If you want to have separate New Relic mobile apps (one of Android and one for iOS), then you'll need to add both app tokens. ![Screenshot of app token fields in project settings](https://docs.newrelic.com/images/newrelic_unreal_sdk_configuration.webp "App token fields in Unreal editor") - In your `Config/DefaultEngine.ini` file, add the following to `/Script/NewRelic.NewRelicSDKSettings`, making sure add your own app token(s): ```ini newrelicAppToken=application-token newrelicAppTokenIOS=ios-application-token ``` ## Customize the agent instrumentation [#mobile-sdk] Need to customize your agent instrumentation? Our public mobile SDK API methods let you collect custom data, configure default settings, and more. The following customizations are available for the Unreal Engine Plugin. | If you want to... | Use this method | | ----------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | Record breadcrumbs to track app activity that may be helpful for troubleshooting crashes. | [Record breadcrumbs](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/record-breadcrumb/#unreal) | | Track a method as an interaction. | [Start interactions](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/start-interaction/#unreal) [Stop interactions](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/stop-interaction/#unreal) | | Record custom metrics. | [Record custom metrics](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/record-custom-metrics//#unreal) | | Record an exception. | [Record errors](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/record-handled-exceptions/#unreal) | | Record custom attributes and events. | There are several ways to report custom attributes and events: - [Record custom attributes](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/create-attribute/#unreal) - [Increment session attribute count](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/increment-session-attribute-count/#unreal) - [Remove an attribute](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/remove-attribute/#unreal) - [Remove all attributes](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/remove-all-attributes/#unreal) - [Record custom events](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/record-custom-events/#unreal) - [Set the maximum size of an event pool](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/set-max-event-pool-size/#unreal) - [Set maximum time the agent stores events in memory](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/set-max-event-buffer-time/#unreal) - [Get a current session's ID](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/current-session-id/#unreal) - [Set a custom user ID to associate with events and attributes](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/set-custom-user-id/#unreal) To determine which method to use, see [Report mobile monitoring custom events and attributes](https://docs.newrelic.com/docs/data-apis/custom-data/custom-events/report-mobile-monitoring-custom-events-attributes/). | | Shut down the agent. | [Shut down the agent](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/shut-down-agent/#unreal) | | Run a test crash report. | [Test crash reporting](https://docs.newrelic.com/docs/mobile-monitoring/new-relic-mobile/mobile-sdk/test-crash-reporting/#unreal) | ## Monitor C++ errors [#monitor-errors] In the New Relic UI, you can view your fatal and non-fatal C++ errors and handled exceptions, including details like event trails, attributes, and stack traces for each recorded error. ![Mobile Handled Exceptions](https://docs.newrelic.com/images/mobile_screenshot-full_handled-exceptions-summary.webp "Mobile Handled Exceptions") To view your errors: 1. Go to **[one.newrelic.com > All capabilities](https://one.newrelic.com/all-capabilities) > Mobile**. 2. Select your Unreal Engine app. 3. Click **Exceptions > Handled exceptions**. You can also build a dashboard for these errors using this query: ```sql SELECT * FROM MobileHandledException SINCE 24 hours ago ``` For more information on NRQL queries, see [Introduction to NRQL](https://docs.newrelic.com/docs/query-your-data/nrql-new-relic-query-language/get-started/introduction-nrql-new-relics-query-language/#where).