Retention Rate
Retention rate is a key performance indicator (KPI) that measures the percentage of users, customers, or employees who continue to use a product, service, or remain with an organization over a specified period. It is commonly used in business, marketing, and human resources to assess loyalty, satisfaction, and long-term value. In software development, it often applies to user engagement with applications or platforms.
Developers should understand retention rate to build and optimize products that foster user loyalty and reduce churn, which is critical for sustainable growth in competitive markets like mobile apps, SaaS, or e-commerce. It helps in analyzing user behavior, improving features, and making data-driven decisions to enhance customer lifetime value. For example, tracking retention can guide A/B testing of onboarding flows or feature updates to increase stickiness.