Apple HIG SwiftUI iOS 26 / Swift 6.2 Best Practices

A principal designer's lens for evaluating and refactoring SwiftUI interfaces to Apple-quality standards, grounded in Rams, Segall, and Edson. Contains 51 rules across 8 categories, each grounded in specific principles from three foundational design texts:

• Dieter Rams — Ten Principles for Good Design ("less, but better," "design should be honest")
• Ken Segall — Insanely Simple (simplicity as a core principle for intuitive, beautiful products)
• John Edson — Design Like Apple (design-focused culture, prototyping to perfection, the product is the marketing)

Categories are ordered by a visual review process: start with what to remove, then what to clarify, then what to make honest, invisible, systematic, thorough, enduring, and finally what to refine.

Scope & Relationship to Sibling Skills

This skill is the refactoring and review lens — it evaluates existing UI and identifies visual anti-patterns to fix. When loaded alongside ios-design (building new UI), ios-hig (HIG compliance), or swift-refactor (code-level refactoring), this skill supersedes overlapping rules with more detailed "incorrect -> correct" transformations and "When NOT to apply" guidance. Use this skill for auditing and improving existing screens; use the siblings for greenfield implementation.

Clinic Architecture Contract (iOS 26 / Swift 6.2)

All guidance in this skill assumes the clinic modular MVVM-C architecture: