Nir Eyal's "Hooked" outlines a four-phase model—Trigger, Action, Variable Reward, and Investment—designed to create habit-forming products by linking user problems to solutions. The framework, utilized by companies like Facebook, emphasizes ethical design, encouraging developers to build products that enhance lives while fostering automatic user engagement. For a detailed overview of the Hook Model, visit ProductPlan . Hooked: How to Build Habit-Forming Products - Gitter.im
Social rewards driven by our connection to others (e.g., likes, comments, and shares). hooked how to build habitforming products free pdf fix