design-retention-loop

Installation
SKILL.md

Design a retention loop

Retention is the substrate every other growth tactic depends on. You cannot buy, share, or onboarding-funnel your way around a product that loses >90% of users in 30 days. Most apps do. This skill designs the loop that keeps users coming back.

The brutal benchmarks (know where you stand)

Day Good Average Poor
D1 30–40%+ 20–28% <15%
D7 15–20%+ 10–14% <7%
D30 7–10%+ 4–6% <3%

iOS retention > Android across categories. Organic users retain 2–3× better than paid installs. (AppsFlyer, Business of Apps)

Subscription-specific churn (RevenueCat 2025): ~30% of annual subscriptions cancel in the first month. Low-priced annual plans retain 36% after a year; high-priced monthly plans retain only 6.7%. RevenueCat's CEO: "Retention starts on day one."

The shape: steep early drop-off (most loss in first few days) → flattens after the first week → users past D7 are far more likely to be active at D30. The first 72 hours are the whole game.

The Hook Model (the four-phase loop)

Installs
1
GitHub Stars
3
First Seen
1 day ago