Text size
Most interface text follows the iOS Larger Text setting. Publication text scaling can vary with EPUB structure or the fixed nature of a PDF page.
VoiceOver
Icon controls include spoken labels, and shelves and menus follow the expected reading order. If an element lacks a useful description, send the screen name and iOS version to support.
Appearance and motion
Choose System, Light, or Dark under Account & Privacy. Sharon also respects Reduce Motion for app-managed transitions.