Glossary
North Star Metric
The North Star Metric (NSM) is the single metric a company chooses as the most faithful reflection of the value its product delivers to users — used as the tiebreaker for all product, marketing, and growth decisions.
Also known as
- North Star Metric
- NSM
- north star metric
Concept popularized by **Sean Ellis** (GrowthHackers) and **Facebook's** growth team around 2012–2015. A good NSM meets three criteria: (1) **it captures real value** delivered to users (not just a revenue proxy), (2) **it predicts long-term business growth** (correlated with retention, LTV), (3) **it's actionable** for the teams (you know what to do to move it).
Historical public examples: **Facebook** = Daily Active Users (DAU), **Spotify** = Time spent listening, **Airbnb** = Nights booked, **Uber** = Trips per week, **Slack** = Messages sent within teams, **WhatsApp** = Messages sent, **Quora** = Questions answered. What's striking: these are almost always **usage** metrics, not revenue metrics — because usage predicts revenue, but the reverse is less true. The NSM then breaks down into **input metrics** (the levers you pull to move it: signups, activation rate, frequency, breadth of usage). The main risk: choosing an NSM that becomes a goal in itself (Goodhart's Law) and optimizing it at the expense of real value — the classic example being Facebook optimizing for sessions at the cost of user well-being, which triggered internal backlash in 2018.
In the getchatsocial.com product
getchatsocial.com's North Star Metric is "social content published from the chat per week" — a metric that captures the value delivered (the product saves real time), predicts retention (active users publish regularly), and guides product trade-offs (anything that reduces publishing friction is prioritized).
FAQ
How do you choose your North Star Metric?
Reforge / Amplitude method: (1) list 5–10 candidate metrics that capture value, (2) for each, measure its correlation with M3–M6 retention and LTV, (3) eliminate those that are revenue proxies (too far downstream), (4) choose the one that combines strong correlation + actionability for your teams. The NSM can evolve every 12–24 months as the product or strategy changes.
Is a single NSM enough, or do you need a full dashboard?
A NSM doesn't replace a dashboard — it organizes it. The 2026 practice: NSM at the top + 3–5 input metrics that drive it + 5–10 secondary metrics by function (CAC, churn, NPS…). The NSM serves as the tiebreaker when two teams have conflicting optimizations: you decide in favor of the option that moves the NSM.