hoangnguyen0403/ios-performance
skills/ios/ios-performance/SKILL.md
Profile and optimize iOS apps with Instruments, memory management, and rendering techniques. Use when profiling iOS apps with Instruments or optimizing memory and rendering.
$ install --global
skillsauthnpx skillsauth add hoangnguyen0403/agent-skills-standard ios-performanceInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
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Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
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CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
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OWASP Dep-Check
50%
Last scanned: May 14, 2026, 2:53 AM124.4s3 files scanned
SKILL.md
- name:
- ios-performance
- description:
- Profile and optimize iOS apps with Instruments, memory management, and rendering techniques. Use when profiling iOS apps with Instruments or optimizing memory and rendering.
iOS Performance
Priority: P0
Implementation Workflow
- Profile with Instruments — Regularly use Allocations and Leaks to detect memory issues. Use Time Profiler for CPU stalls.
- Reuse cells — Always use
dequeueReusableCelland keepcellForRowAtlightweight. - Cache images — Use
SDWebImageorKingfisherfor remote assets.AsyncImagelacks caching for lists. - Offload to background — Move parsing, encryption, and heavy computation off Main thread using GCD or Tasks.
- Enable strict warnings — Set
SWIFT_TREAT_WARNINGS_AS_ERRORSin Release builds. - Run static analysis — Use Xcode's "Analyze" (Product > Analyze) to catch logic errors.
See background processing and cell reuse examples
Anti-Patterns
- No Main-thread Processing: Offload parsing/processing to background using
Task.detachedor GCD - No Manual Cache Clears: Let system handle low-memory via
applicationDidReceiveMemoryWarning - No Retain Cycles: Use Leaks instrument frequently during development
References
- Profiling & Optimization
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