Skill

role-mobile:mobile-performance

Expert guidance on mobile performance optimization — achieving 60fps rendering, memory management (leak detection, large image handling), battery optimization, startup time reduction (cold/warm/hot), image loading strategies (Glide, SDWebImage, cached_network_image), and profiling tools (Instruments, Android Profiler, Flipper). Use when diagnosing or improving mobile app performance.

Install

npx claudepluginhub rnavarych/alpha-engineer --plugin role-mobile

Tool Access

This skill is limited to using the following tools:

ReadGrepGlobBash

Preview

- Diagnosing frame drops, jank, or ANR issues on iOS or Android

Supporting Assets

references/rendering-memory.mdreferences/startup-images-profiling.md

SKILL.md

Similar Skills

skill-lookup

Searches, retrieves, and installs Agent Skills from prompts.chat registry using MCP tools like search_skills and get_skill. Activates for finding skills, browsing catalogs, or extending Claude.

prompts.chat

157.6k

prompt-lookup

Searches prompts.chat for AI prompt templates by keyword or category, retrieves by ID with variable handling, and improves prompts via AI. Use for discovering or enhancing prompts.

prompts.chat

157.6k

agent-harness-construction

Designs and optimizes AI agent action spaces, tool definitions, observation formats, error recovery, and context for higher task completion rates.

everything-claude-code

156.2k

Stats

Parent Repo Stars9

Parent Repo Forks0

Last CommitMar 3, 2026

Actions

View Source View Plugin View on GitHub View README

role-mobile:mobile-performance

When to use

Diagnosing frame drops, jank, or ANR issues on iOS or Android

Detecting and fixing memory leaks (closures, listeners, retained bitmaps)

Reducing cold start time to meet the 2-second-to-interactive target

Choosing image loading libraries (Glide, Coil, SDWebImage, Kingfisher, Nuke)

Selecting the right profiling tool for the symptom: CPU, memory, battery, or frames

Optimizing React Native FlatList/FlashList rendering or Flutter widget rebuilds

Setting up Firebase Performance Monitoring or Macrobenchmark for field data

Core principles

Measure before optimizing — a frame drop without a profile is a guess; a guess is a waste of time

Frame budget is physics — 60fps means 16.67ms; every millisecond over budget is visible

Leaks are deferred crashes — a leak that takes 10 minutes to OOM-kill is still a crash

Cold start under 2 seconds — on a mid-range device; not your M2 MacBook running the simulator

Battery complaints mean background work — excessive wake-ups, GPS polling, or timer abuse

Reference Files

references/rendering-memory.md — 60fps frame budget, iOS CoreAnimation pitfalls, Android overdraw and Compose recomposition, React Native list tuning, Flutter RepaintBoundary and const usage, memory leak detection tools (Instruments, LeakCanary, Flipper, DevTools), common leak patterns, large image downsampling strategies

references/startup-images-profiling.md — battery optimization strategies, cold/warm/hot start definitions and targets, startup measurement tools (os_signpost, MetricKit, Macrobenchmark, Perfetto), iOS image libraries (SDWebImage, Kingfisher, Nuke), Android image libraries (Glide, Coil), cross-platform image caching, Xcode Instruments suite, Android Studio Profiler, Flipper, Flutter DevTools

Mobile Performance

When to use

Diagnosing frame drops, jank, or ANR issues on iOS or Android
Detecting and fixing memory leaks (closures, listeners, retained bitmaps)
Reducing cold start time to meet the 2-second-to-interactive target
Choosing image loading libraries (Glide, Coil, SDWebImage, Kingfisher, Nuke)
Selecting the right profiling tool for the symptom: CPU, memory, battery, or frames
Optimizing React Native FlatList/FlashList rendering or Flutter widget rebuilds
Setting up Firebase Performance Monitoring or Macrobenchmark for field data

Core principles

Measure before optimizing — a frame drop without a profile is a guess; a guess is a waste of time
Frame budget is physics — 60fps means 16.67ms; every millisecond over budget is visible
Leaks are deferred crashes — a leak that takes 10 minutes to OOM-kill is still a crash
Cold start under 2 seconds — on a mid-range device; not your M2 MacBook running the simulator
Battery complaints mean background work — excessive wake-ups, GPS polling, or timer abuse

Reference Files

references/rendering-memory.md — 60fps frame budget, iOS CoreAnimation pitfalls, Android overdraw and Compose recomposition, React Native list tuning, Flutter RepaintBoundary and const usage, memory leak detection tools (Instruments, LeakCanary, Flipper, DevTools), common leak patterns, large image downsampling strategies
references/startup-images-profiling.md — battery optimization strategies, cold/warm/hot start definitions and targets, startup measurement tools (os_signpost, MetricKit, Macrobenchmark, Perfetto), iOS image libraries (SDWebImage, Kingfisher, Nuke), Android image libraries (Glide, Coil), cross-platform image caching, Xcode Instruments suite, Android Studio Profiler, Flipper, Flutter DevTools