DAU means daily active users: the number of unique users who meet a defined activity criterion during a day. Define what counts as a user and what action counts as “active”; different products can use different qualifying events, so DAU is not meaningful without that activity definition.
ReviewedEvidence1 sourceSectionWriting & Style
Quick answer
DAU means “daily active users.”
Key details
Core IssueDAU means daily active users: the number of unique users who meet a defined activity criterion during a day.
Phrase Rolebusiness-or-marketing-metric
Registerbusiness, analytics, marketing, reporting, and professional writing
Important caveats
Usage Boundary
Define what counts as a user and what action counts as “active”; different products can use different qualifying events, so DAU is not meaningful without that activity definition.
Further guidance
Meaning
DAU means “daily active users.”
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
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