Apple HIG guidance for status and progress UI components including progress indicators, status bars, and activity rings. Use this skill when asked about: "progress indicator", "progress bar", "loading spinner", "status bar", "activity ring", "progress display", determinate vs indeterminate progress,

Apple HIG: Status Components Check for .claude/apple design context.md before asking questions. Use existing context and only ask for information not already covered. Key Principles 1. Show progress for operations longer than a second or two. 2. Determinate when duration/percentage is known. A filling progress bar gives users a clear sense of remaining work. Use for downloads, uploads, or any measurable process. 3. Indeterminate when duration is unknown. A spinner communicates work is happening without promising a timeframe. Use for unpredictable network requests. 4. Prefer progress bars over spinners. Determinate progress feels faster and more trustworthy. 5. Place indicators where content will appear. Inline progress near the content area, not modal or distant. 6. Don't stack multiple indicators. Aggregate simultaneous operations into one representation or show the most relevant. 7. Don't hide the status bar without good reason. Reserve hiding for immersive experiences (full screen media, games, AR). 8. Match status bar style to your content. Light or dark for adequate contrast. 9. Respect safe areas. No interactive content behind the status bar. 10. Restore the status bar promptly when exiting immersive contexts. 11. Activity rings are for Move, Exercise, and Stand goals. Don't repurpose the ring metaphor for unrelated data. 12. Respect ring color conventions. Red (Move), green (Exercise), blue (Stand) are strongly associated with Apple Fitness. 13. Use HealthKit APIs for activity data rather than manual tracking. 14. Celebrate completions with animation and haptics when rings close. Reference Index Reference Topic Key content [progress indicators.md](references/progress indicators.md) Progress bars and spinners Determinate, indeterminate, inline placement, duration [status bars.md](references/status bars.md) iOS/iPadOS status bar System info, visibility, style, safe areas [activity rings.md](references/activity rings.md) watchOS activity rings Move/Exercise/Stand, HealthKit, fitness tracking, color Output Format 1. Indicator type recommendation with rationale (determinate vs indeterminate). 2. Timing and animation guidance duration thresholds, animation style, transitions. 3. Accessibility VoiceOver progress announcements, live region updates. 4. Platform specific behavior across targeted platforms. Questions to Ask 1. Is the duration known or unknown? 2. Which platforms? 3. How long does the operation typically take? 4. System level or in app indicator? Related Skills hig components system Widgets and complications displaying progress or status hig inputs Gestures triggering progress states (pull to refresh) hig technologies HealthKit for activity ring data; VoiceOver for progress announcements Built by [Raintree Technology](https://raintree.technology) · [More developer tools](https://raintree.technology)

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