Cohort retention is a quantitative metric within startup product strategy and business analytics that measures user persistence by tracking specific groups (cohorts) over time rather than aggregating the entire user base. The core theoretical mechanism involves defining cohorts based on an initial acquisition dimension, isolating them via a value-correlated action threshold, and measuring subsequent usage against a calibrated time granularity to determine if retention curves achieve asymptotic stability. A cohort curve is considered theoretically viable only when it flattens at any absolute level, as this indicates the existence of sustainable user adherence necessary for long-term growth; failure to flatten signifies that the product has not yet achieved sufficient market demand or value proposition alignment.
Cohort retention is a quantitative metric within startup product strategy and business analytics that measures user persistence by tracking specific groups (cohorts) over time rather than aggregating…