Average session length is a key performance indicator (KPI) that measures the average amount of time that a user spends using a mobile app during a single session. This metric can be useful for tracking the engagement and usage patterns of your app’s users.

To calculate average session length, you will need to track the duration of each user session within your app. You can then calculate the average by dividing the total session time by the number of sessions.

Here’s the formula for calculating average session length:

Average session length = Total session time / Number of sessions

For example, if your app had a total of 1000 minutes of session time and 500 sessions in a given time period, the average session length would be 2 minutes.

Tracking average session length can provide valuable insights into how long your app’s users are spending using your app during a single session, and can help you understand how well your app is retaining and engaging users over time. By comparing average session length to other metrics, such as average daily sessions per user or time spent in app, you can get a more complete picture of your app’s usage patterns.