Casual/Core/Power Split

The casual/core/power split is a segmentation of users by usage intensity: the occasional user (casual), the regular user (core) and the very heavy user (power).

This split admits a recurring truth: users are not one homogeneous mass, and averaging across all of them hides the behavior of each group. The boundary is usually intensity — active days, frequency, or usage volume in a window — and the thresholds are chosen, so they must be documented and stable or a user changes group every month. Its practical value is that each group poses a different question: the power user should be retained and heard (but the roadmap should not be built on them alone, since they are a minority), the core user should be deepened, and the casual user is an opportunity to form a habit. The common trap is treating the three as equivalent in engagement reports; an overall engagement rate without this split gives an average picture that no real user actually behaves like.