Automatically collected events

Firebase collects these events by default.

Automatically collected events are triggered by basic interactions with your app. As long as you use the Firebase SDK, you don't need to write any additional code to collect these events. To see event reports, click Events in the report navigation in Google Analytics, or click the Events tab in the Firebase console.

Analytics collects these events for Android and iOS apps unless otherwise stated.

Event name	Automatically triggered	Parameters
ad_click	when a user clicks an ad Publisher events coming from AdMob via the Google Mobile Ads SDK	ad_event_id
ad_exposure	when at least one ad served by the Mobile Ads SDK is on screen	firebase_screen, firebase_screen_id, firebase_screen_class, exposure_time
ad_impression	when a user sees an ad impression Publisher events coming from AdMob via the Google Mobile Ads SDK	ad_event_id
ad_query	when an ad request is made by the Mobile Ads SDK	ad_event_id
ad_reward	when a reward is granted by a rewarded ad served by the Mobile Ads SDK	ad_unit_id, reward_type, reward_value
adunit_exposure	when an ad unit served by the Mobile Ads SDK is on screen	firebase_screen, firebase_screen_id, firebase_screen_class, exposure_time
app_clear_data	when the user resets/clears the app data, removing all settings and sign-in data
app_exception	when the app crashes or throws an exception	fatal, timestamp
app_remove	when an application package is removed or "uninstalled" from an Android device Android only This event is different from the Daily uninstalls by device and Daily uninstalls by user metrics, which are both reported by Google Play Developer Console. The app_remove event counts the removal of application packages, regardless of the installation source, and the count changes depending on the date range you are using for the report. The Daily uninstalls by device and Daily uninstalls by user metrics count the removal of application packages only when they were installed from Google Play, and are reported on a daily basis.
app_store_refund	when an in-app purchase is refunded by Google Play (Android only) This event is not exported to BigQuery.	product_id, value, currency, quantity
app_store_subscription_cancel	when a paid subscription is cancelled in Google Play Android only Requires an initial subscription that was made on or after July 1, 2019. This event is not exported to BigQuery.	product_id, price, value, currency, cancellation_reason
app_store_subscription_convert	when a free-trial subscription is converted to a paid subscription Android only This event is set as a default conversion. Requires an initial subscription that was made on or after July 1, 2019. An initial free-trial subscription is logged as an in_app_purchase with the subscription parameter set to true. This event is not exported to BigQuery.	product_id, price, value, currency, quantity
app_store_subscription_renew	when a paid subscription is renewed Android only This event is set as a default conversion. Requires an initial subscription that was made on or after July 1, 2019. This event is not exported to BigQuery.	product_id, price, value, currency, quantity, renewal_count
app_update	when the app is updated to a new version and launched again The previous app version id is passed as a parameter. This event is conceptually different from the Daily upgrades by device metric, which is reported by Google Play Developer Console. An upgrade refers to the updating of the application binary, whereas an app_update event is triggered upon the subsequent launch of the upgraded app.	previous_app_version
dynamic_link_app_open	when a user re-opens the app via a dynamic link.	source, medium, campaign, link_id, accept_time
dynamic_link_app_update	when the app is updated to a new version and is opened via a dynamic link. Android only	source, medium, campaign, link_id, accept_time
dynamic_link_first_open	when a user opens the app for the first time via a dynamic link.	source, medium, campaign, link_id, accept_time
first_open	the first time a user launches an app after installing or re-installing it This event is not triggered when a user downloads the app onto a device, but instead when he or she first uses it. To see raw download numbers, look in Google Play Developer Console or in iTunesConnect.	previoius_gmp_app_id, updated_with_analytics, previous_first_open_count, system_app, system_app_update, deferred_analytics_collection, reset_analytics_cause
in_app_purchase	when a user completes an in-app purchase, including an initial subscription, that is processed by the App Store on iTunes or by Google Play The product ID, product name, currency, and quantity are passed as parameters. To see in_app_purchase data for Android apps, you need to link Firebase to Google Play. Analytics supports automatic subscription tracking on Android. iOS coming soon. This event is triggered only by versions of your app that include the Firebase SDK. Note: paid-app purchase revenue and refunds (iOS only) are not automatically tracked. Your reported revenue may differ from the values you see in the Google Play Developer Console. Events that are flagged as being invalid or as sandbox (test) are ignored. Only iOS events are flagged as sandbox. Learn more about testing Google Play billing.	product_id, price, value, currency, quantity, subscription, free_trial, introductory_price
notification_dismiss	when a user dismisses a notification sent by FCM. Android only	message_name, message_time, message_device_time, message_id, topic, label, message_channel
notification_foreground	when a notification sent by FCM is received while the app is in the foreground.	message_name, message_time, message_device_time, message_id, topic, label, message_channel, message_type
notification_open	when a user opens a notification sent by FCM.	message_name, message_time, message_device_time, message_id, topic, label, message_channel
notification_receive	when a notification sent by FCM is received by a device. Android apps only.	message_name, message_time, message_device_time, message_id, topic, label, message_channel, message_type
os_update	when the device operating system is updated to a new version. The previous operating system version id is passed as a parameter.	previous_os_version
screen_view	when a screen transition occurs and any of the following criteria are met: No screen was previously set The new screen name differs from the previous screen name The new screen-class name differs from the previous screen-class name The new screen id differs from the previous screen id	firebase_screen, firebase_screen_class, firebase_screen_id, firebase_previous_screen, firebase_previous_class, firebase_previous_id
session_start	when a user engages the app for more than the minimum session duration after a period of inactivity that exceeds the session timeout duration.
user_engagement	periodically, while the app is in the foreground.	engagement_time_msec

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