What is a Daily Active User (DAU)?
A Daily Active User (DAU) is a metric that counts the number of unique users who engage with a website, app, or platform within a 24-hour period.
How to Calculate DAUs
Calculating DAUs involves identifying and counting the unique users who have engaged with your product or service in some way during a given day. As you can imagine, this can vary greatly depending on the website or application.
One of the most common ways to define a daily active user is simply to count users as active based on their session activity. For example, a user who visits a website or engages with content (clicks, watches videos, etc.) can be considered active.
Beyond just visits to a website, you can also use engagement metrics that meaningfully align with the goals of your website or app. This can include making a purchase, posting a comment, or uploading a photo.
The key is to ensure that each user is only counted once per day, regardless of how many times they engage with your website.
The DAU/MAU Ratio
The DAU/MAU ratio measures how often monthly users return daily—a key indicator of product "stickiness":
Formula
DAU/MAU Ratio = (Daily Active Users / Monthly Active Users) × 100
| Product Category | Average DAU/MAU | Good | Excellent |
|---|---|---|---|
| Social Media | 50%+ | 40-50% | 60%+ |
| Messaging Apps | 50-70% | 50% | 70%+ |
| Gaming (Casual) | 20-30% | 25% | 35%+ |
| SaaS (B2B) | 10-20% | 15% | 25%+ |
| Ecommerce | 5-10% | 8% | 15%+ |
| Productivity Tools | 20-35% | 25% | 40%+ |
Source: Mixpanel (2024)
A 10-20% ratio is typical for products with weekly use cases, 20-30% indicates good engagement for most products, 30-50% shows strong engagement where users find daily value, and 50%+ is exceptional and suggests a habit-forming product.
Why Measure DAUs?
Measuring DAUs provides immediate feedback on how engaging a product or service is to its users.
Unlike vanity metrics, which may only show an upward trend without indicating real engagement, daily active user metrics provide valuable insights into how meaningfully users are engaging with your website or application.
For instance, while an app might boast increasing installs over time, tracking daily active users can reveal whether these users actually return to the app, engage with its features, and contribute to its growth. This distinction is crucial for guiding product development, marketing strategies, and making informed decisions that drive genuine engagement and revenue.
When to Use DAU vs. MAU vs. WAU
DAU is best for daily-use products like social apps, messaging platforms, news sites, and games. Weekly Active Users (WAU) work better for products with weekly workflows like productivity tools and B2B software. Monthly Active Users (MAU) are more appropriate for products with infrequent but regular use like travel booking, banking, and ecommerce.