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/// 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
Causal Analysis: A/B tests on notification strategies, onboarding flows, and feature changes can causally measure impact on DAU, isolating product-driven growth from seasonal or marketing effects.
Benchmark

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

Common Mistake
Counting any login or page load as an "active" event, which inflates DAU with low-intent visits that do not reflect genuine product engagement.

How Different Roles Think About This Metric

Each function reads DAU through a different lens and takes different actions when it changes.

CPO
The CPO uses DAU trends to validate that product investments are driving habitual engagement and to identify when growth is stalling despite new feature releases.
VP Product
VP Product tracks DAU by user segment and product area to measure which parts of the product are driving engagement and which are underperforming.
CMO
The CMO uses DAU to assess whether marketing campaigns are driving meaningful return engagement beyond one-time acquisition.
CEO
The CEO monitors DAU as a high-level signal of product health and uses it in investor reporting alongside ARR growth.

Common Questions About Daily Active Users

Click any question to expand the answer.

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

Metrics that are commonly analyzed alongside DAU.

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

Role Guides That Include This Metric

See how each role uses DAU in context with the full set of metrics they own.

CPO Guide → VP Product Guide → CMO Guide → CEO Guide →
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