DarkBadgeDarkBadgeThe addictive patterns in your apps, exposed.

Book: Hooked

Nir Eyal's blueprint for building habit-forming products — and the ethics questions it raised.

Hooked: How to Build Habit-Forming Products (Nir Eyal, 2014) is a product design manual that became the de facto textbook for a generation of app designers. It describes the Hook Model: Trigger → Action → Variable Reward → Investment. Each loop pulls the user back through an ever-shorter cycle, building habit through repetition rather than conscious choice.

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The book was not written as a critique. It was written as a how-to guide. That is precisely why it matters: it named and systematized the design patterns that DarkBadge measures, from an insider's perspective, before most users were aware these patterns existed.

Eyal has since written Indistractable (2019), arguing that individuals have more control than the Hooked framework implies. The debate about how much is design versus individual agency continues — DarkBadge takes the position that the design matters, that the patterns are measurable, and that consumers deserve to see the score.

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