Native macOS/iOS app performance profiling via xctrace/Time Profiler and CLI-only analysis of Instruments traces. Use when asked to profile, attach, record, or analyze Instruments .trace files, find hotspots, or optimize native app performance without opening Instruments UI.
5.7
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Excellent skill for CLI-only native app performance profiling. The description clearly conveys when to use it (xctrace/Instruments without UI). SKILL.md provides a complete workflow: record → extract → symbolicate → analyze hotspots, with concrete command examples and gotchas (ASLR, binary path matching). Task knowledge is strong with referenced scripts handling each step. Structure is clean with quick-start commands and workflow notes. High novelty: profiling native apps and parsing Instruments traces via CLI would be token-intensive and error-prone for a raw CLI agent. Minor improvement: could explicitly mention simulator vs device profiling constraints, but overall very useful and well-documented.
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