Apple Platform Design

Apple apps feel native because they respect platform conventions, use system materials and motion, and get the small physical details right. Copying a web or Android design onto iOS/macOS reads as foreign instantly.

Full depth is in the SaglitzDesign MCP (npx saglitzdesign-mcp): docs apple-hig-liquid-glass, ios-app-design, macos-app-design, wwdc-design-principles, apple-intelligence-design; tools get_design_language, compare_design_languages (what to port from Android and what not to), get_component_recipe(component, "swiftui") for real SwiftUI code, and the /build_mobile_app_ui and /port_to_platform workflows.

Core HIG principles

• Hierarchy, harmony, consistency — content-first (defer to content), clear focus, familiar patterns.
• Respect system conventions: back gestures, share sheet, context menus, Dynamic Type, safe areas. Don't reinvent them.

Liquid Glass (iOS 26 / macOS Tahoe)

• Translucent, layered materials convey hierarchy — the navigation layer floats in glass over content. Use it for chrome (tab bars, toolbars, sheets), not everywhere.
• Capsule controls; content shows through with adaptive tint. Verify contrast/legibility over busy content (add a scrim if needed); adoption should be tasteful, not a gimmick.

Fluid-interface principles (WWDC "Designing Fluid Interfaces")