Daily Active Users (DAU)
The number of unique users who engage with your product on a given day. A core engagement metric for consumer and product-led SaaS applications.
Also known as: DAU
Why daily active users (DAU) matters
DAU measures the daily pulse of your product. It tells you how many people find your product valuable enough to use every day. For products that should be daily habits (messaging, productivity tools, social platforms), DAU is the most important engagement metric.
DAU trends reveal the impact of feature launches, marketing campaigns, and seasonal patterns faster than any other metric. A declining DAU is an early warning signal of product-market fit erosion.
The newsletter
Join our KISS newsletter
One short read a week on what actually moves revenue, in a free email. Read by 10,000+ operators and founders.
No spam. Unsubscribe in one click.
Daily Active Users (DAU) examples
A team collaboration tool sees DAU of 15,000 out of 50,000 registered users. Their 30% DAU/registered ratio suggests strong daily habit formation.
Benchmark: DAU/MAU of 20-25% is good for most SaaS products
How to Track in KISSmetrics
KISSmetrics automatically tracks unique identified users per day. Use the Activity Report to see DAU trends over time. Segment by user properties like plan type, company size, or acquisition source to understand which segments drive daily engagement.
Common Mistakes
- -Counting bots, automated scripts, or API calls as active users
- -Not defining what "active" means - a login is different from meaningful engagement
- -Comparing DAU across products with fundamentally different use cases and expected frequency
Pro Tips
- +Define "active" based on a value-receiving action, not just opening the app
- +Track DAU/MAU ratio (stickiness) alongside raw DAU for a more complete picture
- +Look at DAU by day of week to understand natural usage patterns before drawing conclusions
Related Terms
Monthly Active Users (MAU)
The number of unique users who engage with your product at least once within a 30-day period. The standard measure of product reach and adoption.
DAU/MAU Ratio
The ratio of daily active users to monthly active users, expressed as a percentage. Measures how frequently your monthly users return on a daily basis - also called stickiness.
Stickiness
Stickiness is a measure of how frequently users return to a product, most commonly calculated as the ratio of daily active users (DAU) to monthly active users (MAU), indicating how habit-forming and indispensable a product is.
Engagement Score
An engagement score is a composite metric that combines multiple user activity signals - such as login frequency, feature usage, and content consumption - into a single numerical score that indicates how actively and deeply a user engages with a product.
Further Reading
What Is MAU? Monthly Active Users Defined and Calculated
MAU (monthly active users) counts unique users who take a qualifying action in a 30-day window. Why the definition is the metric, why a clean MAU is still a reach number, DAU/MAU stickiness, and why MAU should never be a target.
Product Adoption Dashboard: The Metrics That Show Whether Users Actually Get Value
Beyond DAU/MAU - building a product adoption dashboard that tracks activation, feature discovery, time-to-value, habit formation, and expansion readiness.
Build your business intelligence layer for free.
Autocapture means the events are already there when you think of the question. KISSmetrics scans your site, sets itself up, and the chat builds the report from a plain-language question.