What is Monthly Active Users (MAU)?

Why It Matters

Monthly Active Users matters because it's one of the most widely reported engagement metrics for product-led and subscription businesses, giving a broad view of how many people are actively getting value from a product in a given month. On its own, though, MAU can be misleading, since it counts anyone with even one login or action in 30 days the same as a daily power user, which is why it's almost always read alongside Daily Active Users through the DAU MAU ratio, a stickiness measure. A growing MAU with a flat or declining DAU MAU ratio often signals that new users are being acquired but not deeply engaging, a warning sign that can precede churn even while the top-line MAU number still looks healthy. Because of this, MAU is best treated as a reach metric, not a depth-of-engagement metric on its own.

Example

A project management tool has 50,000 registered accounts. Over the last 30 days, 22,000 unique users logged in and performed at least one action, giving the product 22,000 Monthly Active Users. Comparing that to its Daily Active User count of 3,500 produces a DAU MAU ratio of roughly 16%, indicating most monthly users engage only occasionally rather than daily.

Frequently Asked Questions

• How is Monthly Active Users different from total registered users?

  Total registered users counts everyone who ever signed up, including inactive accounts. Monthly Active Users only counts people who actually engaged with the product within the last 30 days, making it a much better reflection of current, real usage.

• What counts as an active user for MAU purposes?

  This varies by product, but it's typically defined as a specific qualifying action, like a login, a core feature use, or a session, rather than simply having an account that exists.

• Why is Monthly Active Users usually paired with Daily Active Users?

  MAU alone doesn't show engagement depth, since it counts a once-a-month user the same as a daily user. Comparing MAU to DAU through the DAU MAU ratio reveals how sticky the product actually is for its user base.

• Can Monthly Active Users grow while a product is actually struggling?

  Yes. New user acquisition can grow MAU even while existing users are quietly disengaging, which is why MAU should be tracked alongside stickiness and retention metrics rather than viewed in isolation.

• Is a higher Monthly Active Users count always better?

  Generally yes for reach, but a large MAU with low engagement depth or high churn among those users can mask underlying retention problems, so MAU alone doesn't tell the full health story.