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Start for freeChurn rate is the percentage of customers or subscribers who stop using a product or service over a specific period. In growth hacking, it's a crucial metric for measuring customer retention and identifying areas for improvement in user experience and product value.
Synonyms: Customer Attrition Rate, Customer Turnover Rate, Customer Defection Rate, Customer Retention Rate

Churn rate is a critical metric for growth hackers because it directly impacts a company's ability to grow and sustain its customer base. A high churn rate can negate the efforts put into acquiring new customers, making it essential to focus on retention strategies. By monitoring and reducing churn, businesses can improve their overall growth trajectory and increase customer lifetime value.
To calculate churn rate, divide the number of customers lost during a specific period by the total number of customers at the beginning of that period. For example, if you start with 1000 customers and lose 50 in a month, your monthly churn rate is 5%.
Analyzing churn rate involves:
Growth hackers employ various tactics to combat churn: