DAU (Daily Active Users) is the number of unique users who engage with an app in a 24-hour window. It is a foundational measure of daily audience and the base for metrics like ARPDAU. Because it counts unique people rather than sessions or installs, DAU shows how many humans actually show up on a given day.

How DAU is measured

DAU counts each unique user once per day, no matter how many times they open the app. The one decision that shapes the number is what you treat as active, whether a simple app open counts, or whether you require a real action such as playing a level or completing a task. Whatever you choose, apply it consistently so the trend stays honest.

Why DAU matters

DAU is a daily pulse on how many people actually use your app, not just how many have installed it. It underpins revenue metrics: ARPDAU, for instance, divides daily revenue by DAU. Watch DAU over time and you can see the effect of a launch, an update, or a marketing push within a day rather than waiting for monthly reports.

DAU and stickiness

Comparing DAU to MAU gives you a stickiness ratio.

Stickiness = DAU / MAU

Stickiness = DAU / MAU

Stickiness = DAU / MAU

A DAU/MAU of 50% means the average monthly user shows up on half the days in the month, a sign of a habit-forming app. Casual apps might sit at 10 to 20%, while daily-habit apps push higher. WAU sits between the two and smooths out single-day swings.

What counts as a good DAU?

There is no universal number, because DAU scales with the size of your install base and how often your app is meant to be used. A meditation app opened a few times a week will never match a daily game on raw DAU, and that is fine. The useful reading is the direction of your own DAU and its ratio to MAU, not a headline figure from another app.

DAU, retention, and churn

DAU is the visible result of two forces pulling against each other: new users arriving and existing users leaving. If your Retention Rate slips, DAU can fall even while acquisition holds steady, because fewer of yesterday's users return today. Reading DAU next to retention tells you whether a flat line means a healthy balance or a leaky funnel being refilled by paid installs. That distinction changes what you do next.

Turning DAU into revenue

Every daily active user is a monetization opportunity. Making an offerwall easy to discover means more of your DAU find it, complete offers, and generate incremental revenue on the same audience you already have. Because the offerwall earns on actions rather than passive views, even a modest DAU can produce meaningful revenue when engagement is high.

Common mistakes to avoid

• Confusing DAU with installs. An install is a one-time event; DAU measures who comes back.

• Counting sessions as users. DAU is unique people per day, not app opens.

• Chasing DAU while ignoring value. A larger daily audience that never engages or spends is worth less than a smaller, active one.