Definition
The count of unique users who perform a meaningful action in the product on a given day.
Formula
Count of distinct users with a qualifying event in a 24-hour window
How to measure
Define a qualifying 'active' event, then count distinct user IDs triggering that event within each calendar day.
Why track it
DAU is the base engagement number for daily-use products and is the numerator for the stickiness ratio.
Example
A messaging app counts 3.2 million distinct accounts that sent or opened a message yesterday.
FAQ
- What is Daily Active Users?
- The count of unique users who perform a meaningful action in the product on a given day.
- How do you calculate Daily Active Users?
- Count of distinct users with a qualifying event in a 24-hour window
- Why track Daily Active Users?
- DAU is the base engagement number for daily-use products and is the numerator for the stickiness ratio.