You cannot improve what you do not measure. Retention is measurable with a small set of well-defined metrics that connect player behaviour to commercial outcomes. This guide covers the core retention metrics every casino and sportsbook operator should track, how to read cohort curves, and how to link retention to revenue so the numbers drive decisions.
Time-based retention measures the share of a cohort that returns after a set number of days. It is the clearest signal of product stickiness and the first thing to instrument.
D30 retention is the most commonly used headline metric because it best predicts durable engagement and correlates strongly with lifetime value. It is most useful when tracked by cohort and paired with churn rate and ARPU.
They are two views of the same thing. Retention measures the share of a cohort that stays active after N days; churn measures the share that goes inactive. Tracking both gives a complete picture of who you keep and who you lose.
Compare cohorts before and after launch, or run exposed-vs-control groups, and measure the difference in D7/D30 retention and ARPU. Because Ludora is event-driven, engagement and reward exposure can be attributed to specific programmes.