The significance of user research in app design lies in its ability to inform and guide the development process based on real user needs. User research helps identify pain points, preferences, and behaviors, ensuring that the app’s functionality aligns with user expectations. Through methods like surveys, interviews, and usability testing, designers gain insights that enhance user experience (UX) and drive greater user engagement. Ultimately, prioritizing user research leads to a more effective app that meets the target audience's needs, increasing its chances of success in the market.