Product & User Engagement

Daily Active Users DAU

CPO VP Product CMO CEO

Daily Active Users (DAU) counts the number of unique users who perform at least one meaningful action in a product on a given day. It is the primary engagement metric for consumer apps and high-frequency B2B tools, reflecting the habitual use and stickiness of the product. DAU growth over time is a leading indicator of healthy product-market fit and user retention.

"Active" should be defined by a meaningful engagement event (not merely a login), tailored to the natural usage cadence of the product.

Formula
Number of Unique Users Performing a Qualifying Event on a Given Day
Where It Lives
  • MixpanelDAU tracking with event-based active user definitions
  • AmplitudeDaily active user charts with cohort and retention analysis
  • FirebaseDAU for mobile and cross-platform apps
  • DatadogInfrastructure-correlated DAU for capacity planning
What Drives It
  • Core product value delivery on a daily basis
  • Push notifications and re-engagement prompts
  • Onboarding effectiveness getting users to aha moment
  • Marketing campaigns driving returning user traffic
  • Product improvements increasing use frequency
Benchmark

DAU/MAU ratio (stickiness) above 20% is generally considered good; consumer apps like Facebook and Snapchat target 50%+ DAU/MAU.

Common Questions About Daily Active Users

How should "active" be defined for DAU?
Active should be defined by an action that reflects genuine product value delivery, not just presence. For a task management app, creating or completing a task is a better active event than logging in. For an e-commerce platform, viewing products or making a purchase qualifies. For a communication tool, sending a message qualifies. The definition should reflect the core user behavior that indicates the product is delivering its intended value.
What does a sudden drop in DAU indicate?
A sudden DAU drop typically signals one of: a technical incident (bug or outage preventing users from engaging), a change to a key product feature that broke user habits, a notification or re-engagement channel going down, or external factors (seasonal patterns, competitive events). Investigate by segmenting the DAU drop by platform, geography, and user cohort to identify where the drop is concentrated before diagnosing the cause.
How does DAU differ from sessions?
DAU counts unique users regardless of how many times they open the app. Sessions count each individual visit. A user who opens the app three times in a day counts as 1 DAU but 3 sessions. DAU reflects unique user engagement breadth; sessions reflect total engagement depth. Both are useful: DAU for understanding how many users are habitually engaged, sessions for understanding engagement intensity.
What growth rate should DAU be increasing?
DAU growth rate targets depend on stage and market. Consumer apps in their growth phase often target 5%–10% monthly DAU growth. B2B tools typically target DAU growth in line with new user onboarding and activation rates. The key is that DAU should grow in proportion to MAU (maintaining stickiness ratio) rather than just reflecting new user acquisition that quickly drops off into churned inactive users.

Related Metrics

MAU | Monthly Active Users DAU/MAU Stickiness Ratio | DAU/MAU Stickiness Ratio Retention Rate | Retention Rate Activation Rate | Activation Rate
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