Mobile User Engagement Glossary | Storyly

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Average Session Duration

What is average session duration?

In the context of mobile apps, the average session duration is the time or length of an app session, averaged across all app sessions during a specific time period. Google Analytics calculates the average session duration by dividing the total length of all app sessions, by the total number of app sessions during a similar period of time.

For example, user A spent 200 seconds in your app, user B spent 40 seconds and user C spent 150 seconds in a day. The average session duration would be 200+40+150 divided by 3, which is 130.