North Star Metric
A single metric that best captures the core value your product delivers to customers — and that the whole company optimises toward.
What is a North Star Metric?
A North Star Metric (NSM) is the single metric that best represents the core value your product delivers to users. It's not a revenue metric or a vanity metric — it's the measurement of real value exchange between your product and its users.
The North Star is not the only metric that matters. It's the metric that, if it grows consistently, reliably predicts everything else (revenue, retention, NPS) growing too.
Examples by company
| Company | North Star Metric | Why |
|---|---|---|
| Airbnb | Nights booked | Captures value for both hosts and guests |
| Slack | Daily active users | Measures habitual, sticky usage |
| Spotify | Time spent listening | Reflects music discovery and engagement |
| Duolingo | Daily active learners | Measures learning habit formation |
| Amplitude | Weekly Querying Users | Captures core analytics workflow |
How to pick your North Star
A good NSM satisfies all four criteria:
- Measures delivered value — not a proxy like signups or pageviews, but evidence that users got something out of the product
- Predicts long-term success — correlates with retention and revenue, not just activation
- Actionable — the team can run experiments to move it
- A leading indicator — it moves before revenue moves
Questions to help you find yours
- What action means a user got real value from our product?
- If this number grows every week, does our business grow too?
- Can our product team directly influence this metric?
North Star vs. vanity metrics
| Vanity metric | Why it fails | Better alternative |
|---|---|---|
| Registered users | Includes churned and inactive users | Weekly active users |
| Pageviews | Measures noise, not value | [Value action] completions per user |
| App downloads | Doesn't reflect usage | Day-7 retention rate |
| Revenue | Lags; hard for product to directly move | Paid feature adoption rate |
Input metrics
Your North Star is an output. To move it, you need input metrics — the 3–5 leading indicators that drive it. Example:
NSM: Weekly active projects created
Input metrics:
- Onboarding completion rate
- Time to first project created
- Projects created per active user
- % users who invite a collaborator
Track input metrics weekly. They tell you which lever to pull before the NSM moves.
Free templates for North
Frequently asked questions
Can a company have more than one North Star Metric?
One is ideal — it forces focus. Two can work if your product has two distinct value loops (e.g. a marketplace serving buyers and sellers). More than two usually means the team hasn't agreed on what value actually means.
What's the difference between a North Star Metric and an OKR?
The North Star is persistent — it doesn't change quarter to quarter. OKRs are time-bound goals for moving specific metrics within a quarter. An OKR key result might be 'grow NSM from 1,200 to 1,500 weekly active projects', but the NSM itself stays constant.
How often should we review the North Star Metric?
Track it weekly. Review whether it's still the right metric annually, or after a major product pivot. Companies in growth stage sometimes find their NSM needs updating as the product matures (e.g. moving from 'users activated' to 'users retained past day 30').
What if our North Star Metric plateaus?
A plateau usually means market saturation in one segment, a product ceiling, or a metric that's measuring the wrong thing. Diagnose by breaking the NSM into its input metrics — the plateau will show up in one specific input. Fix that, or reconsider whether the NSM still reflects delivered value.
Apply North Star Metric to your real product data
PMRead ingests customer feedback, interviews, and Slack threads — and generates PRDs grounded in real evidence.
Related terms
Product-Market Fit
The degree to which a product satisfies strong market demand — characterised by organic growth, high retention, and users who would be 'very disappointed' if the product disappeared.
OKR (Objectives and Key Results)
A goal-setting framework where an Objective states what you want to achieve and Key Results define the measurable outcomes that prove you achieved it.