DAU: Daily Active Users
DAU=Number of Unique Users Active in a Day
Definition: The number of unique users who engage with your product or service within a 24-hour period. “Engage” typically means performing a specific action like logging in, opening the app, or interacting with a key feature.
How to Calculate: Count the number of unique users who performed a defined “active” action (e.g., app open, login, a specific interaction) within a single day (e.g., from midnight to midnight).