Interview frequency: …
Short answer
Apple HIG emphasizes clarity, deference to content, and depth based on physical materials (Materials & Vibrancy). Material Design 3 emphasizes personal expression, dynamic colors extracted from the user's wallpaper (Color Extraction), and explicit elevated surfaces.
Explanation
Apple's philosophy is: (1) Clarity: text remains readable at every size and icons are precise; (2) Deference: the system interface does not compete with user content but highlights it; and (3) Depth: glass-like layers show hierarchy. Material Design 3 brought a major change with Dynamic Color, where app buttons and elements adapt to the user's wallpaper palette, plus large rounded button shapes and bold use of space.
Common mistakes
- Copying an iOS interface exactly into an Android app or vice versa, confusing users.
- Ignoring default system fonts (San Francisco on Apple devices and Roboto on Google devices) without a highly compatible alternative.