Dimensions and metrics

[GA4] Predefined user dimensions

As long as you use the SDK or gtag.js, you don't need to write additional code to collect the following user dimensions from your mobile app and/or website. All of these user dimensions are available for use in Audience conditions, and some of them are also available as general report filters.

For iOS apps, you must collect IDFA to automatically derive the Age, Gender, and Interests dimensions.
User dimension Type Description

Age

(app, web)

Text

The age of the user by bracket: 18-24, 25-34, 35-44, 45-54, 55-64, and 65+.

App store

(app)

Text The store from which the app was downloaded and installed.

App version

(app)

Text The versionName (Android) or the Bundle version (iOS).

Browser

(web)

Text The browser from which user activity originated.

City

(app, web)

Text The city from which user activity originated.

Continent

(app, web)

Text The continent from which user activity originated.

Country

(app, web)

Text The country from which user activity originated.

Device brand

(app, web)

Text The brand name of the mobile device (such as Motorola, LG, or Samsung).

Device category

(app, web)

Text The category of the mobile device (such as mobile or tablet).

Device model

(app)

Text The mobile device model name (such as iPhone 5s or SM-J500M).

Gender

(app, web)

Text

The gender of the user (male or female).

Interests

(app, web)

Text The interests of the user (such as Arts & Entertainment, Games, Sports).

Language

(app, web)

Text The language setting of the device OS (such as en-us or pt-br).

New/Established

(app)

N/A

New: First opened the app within the last 7 days.

Established: First opened the app more than 7 days ago.

Operating system

(app, web)

Text The operating system used by visitors to your website or mobile app.

OS version

(app, web)

Text The operating system version used by visitors to your website or mobile app (such as 9.3.2 or 5.1.1).

Platform

(app, web)

Text The platform on which your website or mobile app ran (such as web, iOS, or Android).

Region

(app, web)

Text The geographic region from which user activity originated.

Subcontinent

(app, web)

Text The subcontinent from which user activity originated.

Automatically generated and assigned app-instance ID

Analytics automatically generates and assigns an app-instance ID to each instance of your app. The ID is used to compute user metrics throughout Analytics.

Learn more about how to access the ID via getAppInstanceId.

Learn more about how to reset the ID via resetAnalyticsData.

Data thresholds

You must meet the Analytics data thresholds to see demographic and interest data. Google may withhold data to prevent anyone from inferring the identity of individuals based on their demographics and interests. For example, if there are fewer than N instances of Gender=male in a report, then data for the male value may be withheld.

Google signals

Activating Google signals gives you more holistic demographic and interest data.

Google signals is data from users who sign in to Google. When Google signals data is available, Analytics associates event data it collects from users with the Google accounts of users who are signed in and consented (by enabling Ads Personalization) to share this information.

Geography dimensions

Geography dimensions (e.g., City, Region) are approximated based on the IP address of the traffic.

Related resources

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