User properties are attributes you define to describe segments of your user base, such as language preference or geographic location. These can be used to define audiences for your app. This guide shows you how to set user properties in your app.
Analytics automatically logs some user properties; you don't need to add any code to enable them. If you need to collect additional data, you can set up to 25 different Analytics User Properties per project. Note that user property names are case-sensitive and that setting two user properties whose names differ only in case results in two distinct user properties being logged.
You can't use a small set of user property names reserved by Google:
Before you begin
Make sure that you've set up your project and can access Analytics as described in Get Started with Analytics.
Set user properties
You can set Analytics user properties to describe the users of your app. You can analyze behaviors of various user segments by applying these properties as filters to your reports.
Set a user property as follows:
Add code to set an Analytics user property with the
setUserProperties()method. You can use the name and value of your choosing for each property.
The following example shows adding a hypothetical favorite food property, which
assigns the value in the string
food to the active user:
You can access this data from the User Properties dashboard in the Firebase console. This dashboard shows a list of user properties that you have defined for your app. You can use these properties as a filter on many of the reports available in Google Analytics. Read more about the Analytics reporting dashboard in the Firebase Help Center.