Toward Enhancing Subtitle Features in Mobile Apps: Analyzing User Reviews for Accessibility and Usability Insights

While the benefits of subtitles for comprehension are widely acknowledged, empirical research has largely neglected the insights offered by user reviews of mobile applications. This study presents a comprehensive analysis of user feedback on subtitle features in the top 230 mobile applications across various categories. We curated a dataset of 48,872 user reviews specifically related to subtitles, manually categorizing them based on user-provided information. To understand sentiment and accessibility concerns, we conducted sentiment analysis and extracted accessibility-related reviews. Our findings offer valuable insights into user challenges and expectations regarding subtitles in mobile applications, providing a foundation for enhancing their design and implementation. These insights include the need for improved customization options, better accessibility features, and more responsive subtitle performance.