Think about a popular app or online tool. What keeps users coming back week after week? Is it a specific feature they can't live without? The ease of getting something done? Maybe it's just satisfying to use.
As a SaaS business, understanding what drives that kind of weekly loyalty is key. That's where weekly active users (WAUs) come in. This metric reveals far more than just who's logging in — it tells you who's consistently getting value from your product.
In this primer, we’ll dive into why WAUs are so important and how tracking them opens the door to making your product even more irresistible to users.
We’ll go over:
Let’s get started.
Weekly active users are a key metric for understanding how often people are interacting with your digital product, whether it's an app, website, or software.
WAU specifically tracks the number of unique users who engage with your product over a 7-day period.
It's important to understand what counts as "engagement." This can vary depending on your business goals. Some common examples include:
To get the most out of tracking WAUs, it's helpful to compare them with daily active users (DAUs). DAUs measure engagement on a daily basis. This gives you a finer-grained view of short-term activity but can fluctuate more due to daily patterns.
WAU, on the other hand, provides a broader weekly view of usage, smoothing out daily variations. Looking at both metrics side-by-side helps you spot ongoing trends in how frequently people return to your product.
Accurately tracking WAUs boils down to understanding unique users and their actions within a week. Here's a step-by-step guide to get it right:
What specific actions signal a user is truly engaged with your product? Don't just rely on logins — think about actions that tie back to your business goals. Consider where the desired action fits in the customer journey. Newly active users might have different engagement patterns than long-term, loyal customers.
Of course, weekly active users are always measured within a standard 7-day week. Still, picking your starting day (e.g., Monday) and sticking to it for consistent tracking and comparison is a key step for tracking WAUs.
Using analytics tools (such as Google Analytics) is essential. It doesn’t need to be Google Analytics though. Look for features like custom event tracking to define actions beyond pageviews, like button clicks, content views, or purchases.
The system needs accurate unique user identification to separate new and returning users within your chosen week for accurate WAU numbers. Data visualization through charts and graphs makes it far easier to see trends and spot how updates or marketing efforts impact your WAU.
But remember: Data privacy protection is non-negotiable. Be clear about how you collect and use user information, and give users control over their data.
Unlike daily active users (DAUs), where numbers can spike or dip based on the day of the week, WAU smooths out those short-term fluctuations. This gives you a clearer view of whether people consistently find value in your product and lets you spot if overall engagement is growing, declining, or staying the same.
WAU goes beyond simple login counts. By defining what makes a user "active" (based on your goals), you'll know if people are truly interacting with your product's core features or just passively browsing.
A steadily increasing WAU is a sign your product is resonating with your target audience. It shows that marketing efforts, new features, or product tweaks are paying off by bringing in engaged users and keeping existing ones coming back.
Let’s take a closer look at some further benefits of tracking WAUs:
Boosting your weekly active users means creating a product people love to come back to week after week. Here are three key strategies to make that happen:
Make sure your product is easy to use, enjoyable, and fulfills a real need for your users. This means:
Combating product stagnation is critical. Regular updates that introduce new features, address bugs, and deliver fresh content signal to users that you're committed to continuous improvement. Here's how to make sure your updates resonate with users:
A fantastic first-week experience can significantly impact long-term user engagement. Here's how to craft a stellar onboarding journey:
Getting an accurate picture of your weekly active users means avoiding some common traps that can inflate or distort your numbers.
The unique user dilemma is an easy mistake to make. This means that, if your tracking isn't careful, it's possible to count the same user engaging multiple times within the week as multiple unique users. This is especially tricky if users switch between devices or browsers.
Solution: To combat this, make sure your analytics platform has strong user identification methods. This could involve tying engagement to accounts, using reliable device fingerprinting (mindful of privacy), or a combination of techniques.
For instance, a user logging in on multiple devices will likely be assigned a unique account ID, ensuring they're counted only once.
The multi-device challenge is another factor to consider. Modern users jump between smartphones, tablets, laptops... and you need to track them across all these. Otherwise, you risk double-counting one active user as several.
Solution: Choose a platform (like Mixpanel) that links activity from different devices to a single user profile. Again, this is often done using a unique user ID that's shared across devices whenever someone is logged in to their account.
Upon reading our primer, you should now have a solid grasp of how and why your weekly active users matter.
Now, the question is, how can you start tracking and experimenting with this metric so that other key business metrics like revenue, profit margins, and engagement grow, too?
The answer is Eppo.
Eppo is a robust experimentation and feature management platform built to help SaaS companies understand what drives their WAUs and other key business metrics.
Eppo allows you to:
Ready to raise your WAUs with the power of rigorous experimentation?
Discover what weekly active users (WAUs) are, why they matter, and how to track them for better product decisions.