In Q3 we made a single concentrated bet: rebuild the new-user onboarding flow and ship it to one cohort. The result exceeded plan. D7 retention for cohort C reached 52.4% — the highest in the company's history and a 9.2 point improvement over the Q2 baseline.
The mechanism is clear in the funnel. The redesigned flow lifted onboarding completion by 14 points and closed the activation→D7 drop-off by 12 points. We see no evidence of a novelty effect; week-over-week gains compounded through w21.
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