In terms of mobile app design, one of the main challenges is to ensure text is:

Ensuring text is readable and large enough is a crucial aspect of mobile app design because mobile devices have smaller screens compared to desktops, and users often read text while on the move. If the text is not large enough or is difficult to read, users may strain their eyes, leading to frustration and a poor user experience. This can negatively affect user engagement and retention.

Readable text size enhances accessibility, allowing a broader range of users—including those with visual impairments—to interact with the app effectively. Additionally, it contributes to the overall clarity of the content, making information easier to scan and comprehend. Prioritizing readability in mobile design also aligns with best practices in UX design, which emphasize user-centered approaches that cater to the needs and challenges faced by users in various contexts.