UI/UX design services play a crucial role in app retention by creating intuitive, engaging, and user-friendly interfaces that keep users satisfied. Good design enhances usability, reduces frustration, and encourages repeat usage. Seamless navigation, appealing visuals, and quick access to features make users more likely to stay and return. Poor UI/UX, on the other hand, can lead to confusion and app abandonment. Thus, investing in quality UI/UX design directly boosts user retention and long-term app success.