What Is a North Star Metric?
A North Star Metric is the single measure that best captures the core value your product delivers to customers, used to align an entire team on one outcome. The best ones track value delivered, like time spent listening or nights booked, not vanity counts like total signups.
A North Star Metric is a focusing device. Its job is not to be the only number you watch, but to be the one number a whole team can pull toward without working against each other.
What makes a good North Star
A strong North Star Metric has three properties:
- It reflects customer value. When the metric goes up, customers are getting more of what they came for.
- It predicts revenue without being revenue. Revenue is a lagging result. A good North Star leads it.
- The team can influence it. A metric nobody can move is a poster, not a North Star.
The classic failure is choosing a vanity metric like total registered users. It only goes up, it hides churn, and improving it can mean nothing for the business.
North Star examples
Well-known products and the value-based metrics widely associated with them.
Spotify
Time spent listening. Captures whether the product is genuinely useful, rather than only installed.
Airbnb
Nights booked. Ties directly to value exchanged between guests and hosts.
Slack
Messages sent within active teams. Reflects real collaboration, not seat count.
How to choose yours
1. Define the core value moment
What does a customer do when they get exactly what your product promises?
2. Find the metric that counts that moment
Pick the measure that increments each time that value is delivered, across your active users.
3. Pressure-test it
Could the metric rise while customers get less value? If yes, it is gameable. Refine until growth in the metric can only mean growth in value.
Input metrics: the levers under the North Star
You cannot move a North Star Metric directly. You move its inputs. Break the North Star into the two to four input metrics that drive it, and run experiments on those. For a content product whose North Star is weekly active value moments, inputs might be new-user activation, returning-user frequency, and breadth of feature use. Input metrics are where a backlog of experiments actually connects to the one number the team cares about.
Frequently asked questions
What is the difference between a North Star Metric and a KPI?
A North Star Metric is the single, value-based measure that aligns the whole company on one outcome. KPIs are the broader set of indicators different teams track. The North Star sits above the KPIs and gives them a shared direction.
Should revenue be your North Star Metric?
Usually not. Revenue is a lagging result of delivering value. A good North Star leads revenue by measuring the value customers receive, so improving it tends to grow revenue as a consequence rather than directly.
What are input metrics?
Input metrics are the two to four drivers you can directly influence that together move the North Star Metric. Because you cannot act on the North Star directly, experiments target its inputs, such as activation, frequency, or breadth of use.
Related terms
Go deeper
- North Star Metric: The Ultimate Guide
- Growth Experimentation: The 2026 Ultimate Guide
- Experiment Prioritization Guide
About GrowthLab
GrowthLab is an experiment management tool where AI drafts the hypotheses, ICE and ROTI prioritize them, and every learning compounds into the next batch.
