mobile-performance
App startup, memory management, battery efficiency, network optimization, and profiling tools
Works with
--- name: mobile-performance description: App startup, memory management, battery efficiency, network optimization, and profiling tools license: MIT --- # Mobile Performance Profile, diagnose, and optimize mobile app performance. ## Key Metrics | Metric | Target | Tool | |--------|--------|------| | Cold Start | <1.5s | Xcode Organizer, Play Console | | Warm Start | <0.5s | Systrace, os_signpost | | Frames | 60fps (16ms) | Profile GPU, Perfetto | | APK/IPA Size | <50MB | size-report, analyzer | | Memory | <150MB | Xcode Memory Debugger, Memory Profiler | | Network Latency | <200ms p95 | Proxyman, Charles | ## Startup Optimization ### iOS - Reduce dynamic framework loading (prefer static libraries) - Lazy-load non-critical services - Profile with `Instruments - App Launch` - Use `dispatch_once` for singletons ### Android - Apply `App Startup` library for content providers - Profile with `Android Studio - Startup Profiler` - Use baseline profiles (Android 12+) - Defer heavy init to background threads ## Memory Management - Watch for retain cycles (weak/unowned references) - Image caching: use NSCache/LruCache with size limits - Monitor for OOMs in production with crash reporting - Release view controllers when off-screen ## Network Optimization - HTTP/2 multiplexing for concurrent requests - Response caching with ETags - Prefetch data predictively - Compress with Brotli or gzip - Use Protocol Buffers over JSON for large payloads
More Performance skills
seo-audit
coreyhaines31/marketingskills
When the user wants to audit, review, or diagnose SEO issues on their site. Also use when the user mentions "SEO audit," "technical SEO," "why am I not ranking," "SEO issues," "on-page SEO," "meta tags review," "SEO health check," "my traffic dropped," "lost rankings," "not showing up in Google," "site isn't ranking," "Google update hit me," "page speed," "core web vitals," "crawl errors," or "indexing issues." Use this even if the user just says something vague like "my SEO is bad" or "help with SEO" — start with an audit. For building pages at scale to target keywords, see programmatic-seo. For adding structured data, see schema. For AI search optimization, see ai-seo.
competitor-profiling
coreyhaines31/marketingskills
When the user wants to research, profile, or analyze competitors from their URLs. Also use when the user mentions 'competitor profile,' 'competitor research,' 'competitor analysis,' 'profile this competitor,' 'analyze competitor,' 'competitive intelligence,' 'competitor deep dive,' 'who are my competitors,' 'competitor landscape,' 'competitor dossier,' 'competitive audit,' or 'research these competitors.' Input is a list of competitor URLs. Output is structured competitor profile markdown files. For creating comparison/alternative pages from profiles, see competitors. For sales-specific battle cards, see sales-enablement.
vercel-optimize
vercel-labs/agent-skills
Use for Vercel cost and performance optimization on deployed projects, especially Next.js, SvelteKit, Nuxt, and limited Astro apps. Collect Vercel metrics, usage, project config, and code scan results first; investigate only metric-backed candidates; produce ranked recommendations grounded in verified files and version-aware Vercel/framework docs. Trigger for Vercel bill reduction, slow or expensive routes, caching opportunities, Function Invocations, Build Minutes, Fast Data Transfer, Core Web Vitals, Bot Management, Fluid compute, or cost breakdown requests.
