“Hooked” explores the psychology behind habit-forming products and how designers can create experiences that keep users coming back. Nir Eyal introduces the Hook Model, a four-step process that includes triggers, actions, rewards, and investment. By mastering this model, companies can build products that users rely on, turning them into long-term customers.

Eyal uses real-life examples from companies like Facebook and Instagram to illustrate how successful products hook users. The book also emphasizes ethical product creation, ensuring that designers consider the impact of their designs on user well-being. “Hooked” is perfect for anyone looking to increase user retention without relying on heavy marketing.