A lack of customer engagement is a common cause of churn. When customers stop interacting with a product regularly, they are more likely to lose interest and eventually leave. Low engagement often indicates that customers do not see ongoing value in the product or are not being encouraged to use it consistently. Duolingo effectively demonstrates how strong engagement features prevent churn. The language learning app maintains user interest through daily streak tracking, personalized practice reminders, and a gamified league system that rewards consistent usage. By combining achievable daily goals with competitive elements and progress visualization, Duolingo successfully creates sustainable engagement habits that keep users returning to the platform.

Businesses can prevent churn by keeping customers engaged through regular communication, personalized recommendations, or incentives that encourage active use. Engagement can be measured through metrics such as usage frequency, feature adoption, or time spent using the product.