Glossary/Mobile & App Marketing/Monthly Active Users (MAU)
Mobile & App Marketing
Monthly Active Users (MAU)
The number of unique users who engage with an app or product within a 30-day period.
By Brandon Mina·CEO, BrandPilot AI·Updated November 2026
Short answer
Monthly active users (MAU) is the number of unique users who engage with an app or product within a 30-day period. What counts as active, such as opening the app or completing a key action, varies by company. MAU indicates audience size and growth, and is often compared with daily active users to gauge stickiness.