Monthly Active Users (MAU)
How many of your users showed up at least once this month — the monthly census of the actively engaged.
Monthly Active Users (MAU) counts distinct users who perform at least one qualifying action in a product within a rolling 30-day or calendar month window. Like DAU, the definition of "active" must be defined beyond mere login — the threshold should capture genuine product engagement, not passive presence. MAU is the broadest engagement metric, capturing users who interact with the product at any frequency within the month, from daily users to those who check in once every few weeks. It's the standard reporting metric for investor updates, board decks, and marketing communications because it gives a stable, smoothed view of the active audience that isn't affected by weekly patterns or individual day volatility.
The relationship between MAU and the paying customer base (seat count or account count) reveals adoption penetration within accounts. An enterprise account with 500 licensed seats and 200 MAU has 40% adoption penetration — 60% of licensed seats are not actively engaging with the product, representing both a retention risk (low-adoption accounts churn at higher rates) and an expansion opportunity (demonstrating value to the inactive 60% could drive seat removal or expansion). Customer success teams use this insight to prioritize intervention: accounts with declining MAU despite stable seat counts are likely approaching churn, while accounts with rising MAU close to plan limits are expansion candidates.
For B2B content teams, MAU trends inform the editorial calendar. Rising MAU within an existing customer base suggests active adoption and creates appetite for advanced content — power user tutorials, new feature announcements, and advanced use case walkthroughs for users who are already engaged and ready to go deeper. Declining MAU within specific segments suggests the need for re-engagement content — "did you know" series, success story spotlights from similar users, and practical quick-wins videos that give lapsed users a reason to return. MAU segmented by tenure (new vs. 6-month vs. 12-month customers) creates a content targeting framework tied directly to product engagement reality.
Related terms
- Daily Active Users (DAU)— How many wizards entered Hogwarts today — the daily attendance register of your product's engaged population.
- Product Stickiness— The DAU/MAU ratio that tells you if users return because they want to — or because they've become Gollum about it.
- Activation Rate— The percentage who found their Lumos moment — when the product finally clicks like a wand finding its wizard.
- Churn Rate— The percentage who walked into the Prancing Pony and never came back — the metric nobody wants to present.