Metric · Hooked
Stored value per user
Count of what a user has accumulated that makes the product better with use (content, data, followers, reputation, skill), read against churn by stored-value decile. The Stay engine: reasons to stay that a copycat can't offer.
Plain label: what users have built upAlso known as: stored value, accumulated investment, switching cost
If churn falls steadily across deciles, stored value is doing its job; make it visible to the user. Retention built on stored value and mastery tends to last, while retention built mainly on fear of loss tends to end in relieved exits (Chou's observation, grade D). HK-INV27 (Hooked Ch.5)
Limits
What we don’t claim
- The Hook Model is a practical design tool, not a validated or complete theory of behavior.Hooked, Introduction
Sources
Hooked · Nir Eyal
Ch.5
Source IDs: HK-INV27HK-Q104
Book content is paraphrased, never quoted at length. Last verified October 24, 2026.
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