A retention cohort groups users by when they started and measures how many return or remain active over time.
Retention reveals whether a product creates repeat value after the first session.
Users who signed up in week one may have 42% week-four retention, while week-two users may have 31%, suggesting an onboarding or acquisition-quality change.
Public previews show the map. The app gives you reps, Hatch follow-ups, FLOW feedback, weak-move drills, and saved proof of progress.