Cohort Evidence

What We Measure

Three metrics compose the "measured lift" record: study completion (did members actually finish what they started?), 30-day retention (did a new habit take root?), and quality-score delta (did the questions members ask get better over time?). All three draw from the same journey events and study records — no synthetic data.

N = 1,000 users

Not yet reached — projected date unavailable. Current user count: 0. We publish this panel only when the threshold is met. We do not publish projected values as measurements.

N = 10,000 users

Not yet reached — projected date unavailable. Current user count: 0. We publish this panel only when the threshold is met. We do not publish projected values as measurements.

How We Define Cohorts

Cohorts are ranked by signup order (earliest created_at first). The first 1,000 users form the N=1K cohort. The first 10,000 form N=10K. This bucketing is stable across recomputes — any auditor running the same query will get the same answer.

What This Is Not

This page is not a peer-reviewed study and not a randomized controlled trial. Completion and retention measures are proxies for engagement depth; the quality-score delta is a directional signal, not an outcome claim. When a threshold has not been reached, we say so plainly. We do not publish projected values as measurements.