ToolStack
Engagement Metric

Daily Active Users (DAU)

DAU counts the number of unique users who perform at least one meaningful action in your product on a given day. "Meaningful" is key — most teams exclude passive opens and count only actions that signal genuine engagement (a message sent, a document edited, a search run).

Formula
DAU = Unique users who performed a qualifying action in a 24-hour window

Note: Define "qualifying action" explicitly before measuring. Logging in is usually not enough.

Healthy range

DAU/MAU ratio > 20% is solid; > 50% is exceptional (WhatsApp, Slack in active teams)

Warning signs

DAU/MAU < 10% suggests most users are not finding regular value

Benchmarks by segment

SegmentBenchmark
Consumer social apps40–60% DAU/MAU
B2B SaaS (collaboration)20–40% DAU/MAU
B2B SaaS (project mgmt)15–25% DAU/MAU
Mobile games30–50% DAU/MAU

How to improve DAU

1

Identify the "aha moment" — the action that correlates most strongly with long-term retention — and optimise onboarding to reach it faster

2

Introduce daily habits: digests, reminders, or streaks that give users a reason to return each day

3

Reduce friction in the most common returning-user flow — every extra tap reduces DAU

4

Segment DAU by cohort to identify which acquisition channels bring the most engaged users

Common measurement mistakes

!Counting logins or app opens as "active" — this inflates DAU without measuring real engagement
!Optimising DAU with notifications that bring users back but frustrate them (hurts long-term retention)
!Comparing raw DAU numbers across different time periods without controlling for seasonality

Tools for measuring DAU

#1
Amplitude
4.5Free tier

Best-in-class behavioral analytics with powerful event segmentation, funnel analysis, and retention charts that go far deeper than Google Analytics

#2
Mixpanel
4.6Free tier

Best-in-class event-based analytics with intuitive funnel, retention, and flow reports that surface actionable insights quickly

#3
FullStory
4.5Free tier

Best-in-class autocapture technology — captures every click, scroll, and interaction without manual event tagging, enabling retroactive analysis on historical data

#4
PostHog
4.6Free tier

All-in-one product analytics platform combining analytics, session replay, feature flags, A/B testing, surveys, and a data warehouse — replacing multiple point solutions

#5
Heap
4.4Free tier

Autocapture eliminates the need for manual event instrumentation — every click, pageview, and form interaction is tracked automatically from day one

#6
Statsig
4.7Free tier

All-in-one platform combining feature flags, A/B testing, product analytics, session replay, and web analytics — eliminating the need for separate tools

Frequently Asked Questions

Should I use DAU or WAU?

Use the interval that matches your product's natural usage cadence. Daily collaboration tools (Slack, Notion) suit DAU. Weekly planning tools (roadmapping, OKR software) suit WAU. Using the wrong interval makes engagement look worse than it is.

How do I set a DAU target?

Reverse from your business goal. If you need $X ARR and your conversion rate is Y%, you need Z MAU. Multiply by your target DAU/MAU ratio to get your DAU target. Don't set DAU targets in isolation.

Related metrics

Monthly Active Users (MAU)Retention RateFeature Adoption Rate