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Beginner

What is DAU

Full name: Daily Active Users

Also known as: daily active users

Definition

DAU (daily active users) is the number of different people who take a meaningful action in your product on one day, each counted once however often they return.

Why it matters

DAU shows whether a product has become a daily habit.

Common mistakes

Counting every app open or page view as active use, which makes the number look bigger than the real use.

Related terms

Worked exampleIllustration

One Tuesday, two answers

Illustrative: a fictional gym booking app, no real business. One ordinary Tuesday.

  1. Opened the app

    50 members open the app at least once. If opening is what counts, DAU is 50.

    50

  2. Booked or cancelled

    30 of those 50 book or cancel a class. If that is what counts, DAU is 30.

    30

  3. Counted once

    One member opens the app 6 times and books one class. In both answers they count as one person.

    1

Same day, two honest numbers. Decide what counts before you look.

Illustration

What counts as active?

  • One dot per member who opened the app that day: 50 dots.
  • This member opened the app 6 times and still counts once.

DAU = 30

If booking or cancelling counts, 30 of the 50 are active: DAU is 30. Decide this before you look at the number.

Illustrative: one ordinary Tuesday in a fictional gym's booking app. Switch what counts and the same day gives a different DAU.

Definition

DAU, short for daily active users, counts the different people who did something in your product on one day that counts as activity. Each person is counted once, however many times they came back that day. What counts is your decision: opening the app, or a real action such as booking a class. Google Analytics, for example, defines active users as the unique users who engaged with your site or app in the date range you choose, and its user stickiness report takes DAU as the active users in the last 24 hours.

Why it matters

It fits products people are meant to use often, such as a booking app, a messaging tool or a loyalty app, and a drop in it is an early sign that something changed. On its own it says little: DAU divided by MAU, called stickiness, shows how often the average user comes back (DAU ÷ MAU × 100). A clinic, salon or shop without an app has no daily habit to measure, so retention and repeat bookings tell the owner more.

Directly related: MAU, Retention, Activation.

Improvement tips

  • Write down what counts as active, such as booking or cancelling a class, and keep the same definition from month to month.
  • Read DAU next to MAU: stickiness, DAU ÷ MAU × 100, shows how often the average user comes back.
  • If your customers come a few times a month or less, watch retention and repeat bookings instead of the daily number.

Common mistakes

  • Tracking DAU for a business people use a few times a year, where a daily count says almost nothing.
  • Changing what counts as active halfway and comparing the new number with the old one.

Related terms

ProductBeginner

MAU

MAU (monthly active users) is the number of different people who take a meaningful action in your product at least once in a month, each counted once.

ProductIntermediate

Retention

Retention is the share of customers who keep buying or using your product over a set period, counting only those you already had at the start.

ProductIntermediate

Activation

Activation is the moment a new customer first gets the result they came for, such as a first booking kept, and an early sign of who will come back.

ProductIntermediate

North Star Metric

A North Star Metric is the one number that best counts the value customers get from your product, chosen so that growing it grows the business too.

MarketingBeginner

Vanity metrics

Vanity metrics are numbers that look impressive, like followers, views or total sign ups, but do not tell you what to do next or whether sales are growing.

Quick check

On Tuesday 50 members opened a gym booking app, and 30 of them booked or cancelled a class. One member opened it 6 times. What is the DAU?

Choose an answer

Frequently asked questions

Do I need to track DAU before I launch?
No, there is nobody to count yet. Decide instead whether people are meant to use your product every day or a few times a month, because that tells you whether DAU will matter at all.
When does DAU start to matter for a new business?
Once people use the product often enough for a daily count to move, such as a booking app members open several times a week. For a product used once a month, a daily number mostly shows noise.
How do I decide who counts as an active user?
Pick the action that shows real use, such as booking or cancelling a class, rather than opening the app. Write the definition down and keep it, so this month's number can be compared with last month's.
Does DAU fit a clinic, a salon or a shop?
Usually not. Without an app people use every day there is no daily habit to measure. Count retention and repeat bookings from the booking diary instead. DAU fits a product people open often, such as a booking app or a loyalty app.
Why does DAU matter for a business that is already running?
For a product people use often, a drop in DAU is an early sign that something changed, a fault in the app or a habit that is fading, before it shows up in the monthly numbers.
What goes wrong when a business watches only DAU?
A busy day can hide members who stopped coming. DAU says how many people were active today, not whether they are the same people as last month, so read it next to MAU and retention.
Where do I find the DAU of my website or app?
Google Analytics counts active users, the unique users who engaged with your site or app in the date range you choose, and its user stickiness report shows DAU against MAU. Choose a range of one day and you have a daily figure.
How can a business raise its DAU?
Give people a real reason to come back, such as seeing free places in classes or changing a booking in seconds. Then check that the action you count went up, not only the number of app opens.
What does DAU stand for?
DAU stands for daily active users: the number of different people who did something in your product on one day that counts as activity. Each person is counted once, however often they came back.
Is tracking DAU complicated?
No. Analytics tools count unique active users for you. The hard part is the decision no tool makes for you: which action counts as active.
What is stickiness?
Stickiness is DAU divided by MAU, times 100. It shows how often the average monthly user is active: 25% means about one day in four. Google Analytics shows it as a ready made ratio.
What is the difference between DAU and page views?
Page views count every page that loads, so one person who opens ten pages adds ten. DAU counts people, so the same person counts once for the day.

Sources: Google Analytics Help, "[GA4] Understand user metrics" (support.google.com), Google Analytics Help, "User stickiness" (support.google.com)

Last reviewed: 2026-09-24

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