What Customer churn means
Customer churn is the share of your customers who cancel during a given period, usually a month. It measures how many people you lose, not how much revenue you lose.
A founder running a big directory listing push to bring in new signups might see growth on paper, while a high churn rate quietly cancels out most of those new customers within a couple of months.
Customer churn is not the full picture on its own. Losing ten small-plan customers is very different from losing ten of your biggest accounts, even though the churn rate can look identical.
Calculate your churn by dividing the customers who canceled in a month by the customers you had at the start of that month, then track the trend over several months.
Why this matters for builders
Track churn before you scale paid acquisition or directory spend.
Mistake builders make often
Some founders track new signups closely but never calculate churn, so they miss that growth spend is mostly replacing customers who are quietly leaving.
What to do now
Run your numbers through the Churn Impact Calculator before you increase spend on directory listings or paid acquisition.