This one takes your user engagement data and churns out retention curves, cohort comparisons, and drop-off patterns. Upload a CSV with cohort identifiers and time-based metrics, and you'll get heatmaps, retention rates, and specific insights about which cohorts are underperforming and why. What's nice is it doesn't just dump numbers on you. It suggests actual follow-up research like targeted interviews with churning users or session replay analysis. The combo of quantitative analysis plus qualitative research recommendations makes it more useful than a pure stats tool. Best when you've got at least 3-4 cohorts to compare and you want to understand not just what's happening but what to investigate next.
npx skills add https://github.com/phuryn/pm-skills --skill cohort-analysis