Hooked: How to Build Habit-Forming Products

Hooked bridges behavioral psychology and product design with rare precision. Eyal doesn’t just describe how habits form — he translates cognitive science into an practical framework for ethical design. The book examines why some apps and services become indispensable parts of users’ lives, emphasizing the power of triggers and variable rewards. Its value lies in its balance: it’s both analytical and practical, offering examples from products like Instagram, Twitter, and Slack without glorifying manipulation. Instead, it challenges designers to build products that genuinely improve lives by aligning user behavior with beneficial outcomes. The expanded insights and case studies from Ryan Hoover (founder of Product Hunt) add a real-world dimension that makes the ideas concrete. Clear, concise, and thought-provoking, Hooked remains one of the key texts for understanding user retention and the ethics of engagement in modern design.

Nir Eyal is a behavioral design expert and lecturer who writes about the intersection of psychology, technology, and business. Ryan Hoover is an entrepreneur and founder of Product Hunt, known for his focus on emerging tech and startup ecosystems.