Measure time from user tap to action completion. Use when tracking button response times, form submissions, add-to-cart, or any tap-triggered operation.
This skill inherits all available tools. When active, it can use any tool Claude has access to.
Time from user tap to action successfully completed.
TAP → START_SPAN → [async work] → END_SPAN
| Rating | Duration |
|---|---|
| Good | <300ms |
| Acceptable | <1s |
| Poor | >1s |
See references/ui-performance.md (Entry Point Latency section) for platform-specific code.
skills/navigation-latency for screen-to-screen transitions (vs single-tap actions)skills/user-journey-tracking for friction detection on key interactions