Most SaaS dashboards track the wrong things for a product-led model.
MRR, churn, CAC — these are important. But they are outcome metrics. By the time they move, whatever caused the movement happened weeks or months ago. PLG requires leading indicators: metrics that tell you whether your product is driving growth before the revenue impact shows up.
Here are the metrics that actually tell you if PLG is working.
Activation rate
The most important leading indicator in PLG. If users are not reaching first value, nothing else in the funnel works.
Activation rate measures the percentage of new signups who complete your activation event — the specific action that signals they have experienced real value — within a defined time window.
A healthy PLG product typically sees 30-50% activation. Below 20% is a signal that the product-led motion will not work until the activation problem is fixed. Above 50% means the self-serve funnel is working and attention can shift to deepening engagement.
Track it monthly by cohort, not as a rolling average. Cohort tracking shows whether recent changes to onboarding are actually improving activation or just looking like they are.
Time to value
How long it takes a new user to reach first value from the moment they sign up.
Shorter is almost always better. A product that delivers a clear value moment in the first session converts and retains better than one that takes days. Users who experience value quickly have higher motivation to return before they forget why they signed up.
Measure it as the median time from signup to activation event completion. Track it alongside activation rate — a product can have a high activation rate with a slow time to value, which typically means users who stay through a long setup eventually find the product useful but many others drop off before completing it.
Product-qualified leads
A PQL is a user whose product behaviour signals purchase intent. The definition varies by product but typically involves reaching a certain level of engagement: invited multiple team members, hit a usage limit, used the product a certain number of times in a week.
PQLs are a more reliable signal of revenue potential than marketing-qualified leads because they are based on demonstrated product engagement rather than inferred interest. Sales teams that focus on PQLs close at higher rates and with shorter cycles than those working cold leads.
Define your PQL criteria based on behaviour that correlates with conversion. Do not define it as "anyone who signs up." Track the conversion rate from PQL to paid monthly. If it is not above 15-20%, your PQL definition is probably too broad.
Expansion revenue rate
In a healthy PLG product, existing customers grow. They add seats, upgrade to higher tiers, or move from self-serve to annual contracts.
Expansion revenue rate measures how much of your new MRR each month comes from existing customers expanding rather than new customers. In a mature PLG product, expansion often exceeds new customer revenue. This is the compounding effect — the product keeps selling to people who already use it.
Track net revenue retention (NRR) alongside expansion. NRR above 100% means your existing customer base is growing even before you add new customers. NRR below 90% means churn is eating into your base faster than expansion is growing it.
Viral coefficient
How many new users each existing user brings in through natural sharing or invitation.
In a product with strong PLG, users want colleagues to have the product. They invite team members, share outputs, or reference the product in ways that bring others in. A viral coefficient above 1 means the product grows without any acquisition spend for those users.
Most B2B products sit below 1, which is fine. Even a coefficient of 0.3 means 30% of your user acquisition happens organically through existing users. Track it by cohort and by acquisition channel — users from certain sources may have significantly higher viral coefficients than others.
The metric to ignore
Session count is not a PLG metric. Lots of sessions without activation, conversion, or expansion is a vanity number. It tells you users are logging in but not whether the product is working.
The right question is not "are users engaging" but "are users progressing toward and through value." Engagement without value delivery does not drive PLG growth.
If you want to understand which of these metrics your product is performing well or poorly on, we do free Loom teardowns where we sign up as real users and assess your product-led funnel from the outside.
Request a free teardown at growrockets.com/teardown.
