Monthly Active Users
Also called MAU
Monthly active users: the number of unique people who used your product at least once in the last 30 days. A standard measure of a product's reach.
Why it matters
MAU is a headline size metric, but active must be defined honestly for it to mean anything. On its own it can flatter; paired with DAU and retention it shows whether the audience is real and engaged.
For example
An app is used by 30 lakh unique people over a 30-day window, its monthly active users.
Go deeper
Related terms
Also in Starting Up
See how founders actually handle this on Money, pricing and metrics, part of the Starting Up hub.
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