Journal
Short pieces on cohorts, cancel timing, and the practical limits of retention reviews.
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When trial conversion hides weak paid retention
Why a strong trial-to-paid rate can still leave subscription cohorts thinning too fast after the first renewal.
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Reading cancel timing without inventing motives
How to describe when subscribers leave before you claim to know why they left.
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Cohort grain that fits Korean billing calendars
Choosing signup-week versus first-paid-date cohorts when many subscriptions renew on calendar months.
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What a retention audit should refuse to promise
Boundaries that keep application analytics reviews honest for subscription teams.