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Mobile app debugging

Skill secondsky/claude-skills/plugins/mobile-app-debugging/skills/mobile-app-debugging

Mobile app debugging for iOS, Android, cross-platform frameworks. Use for crashes, memory leaks, performance issues, network problems, or encountering Xcode instruments, Android Profiler, React Native debugger, native bridge errors.From its SKILL.md

Install
npx -y skills add secondsky/claude-skills --skill mobile-app-debugging

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The file declares its own license as MIT. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.

SKILL.md

2.0 KB, 422 tokens by cl100k_base, as published. Nobody here has run it

Mobile App Debugging

Debug mobile applications across iOS, Android, and cross-platform frameworks.

iOS Debugging (Xcode)

// Breakpoint with condition
// Right-click breakpoint > Edit > Condition: userId == "123"

// LLDB commands
po variable          // Print object
p expression         // Evaluate expression
bt                   // Backtrace

Memory Debugging

  • Use Memory Graph Debugger to find retain cycles
  • Enable Zombie Objects for use-after-free bugs
  • Profile with Instruments > Leaks

Android Debugging (Android Studio)

// Logcat filtering
Log.d("TAG", "Debug message")
Log.e("TAG", "Error", exception)

// Filter: tag:MyApp level:error

Common Issues

  • ANR: Check main thread blocking
  • OOM: Profile with Memory Profiler
  • Layout issues: Use Layout Inspector

React Native

// Remote debugging
// Shake device > Debug JS Remotely

// Console logging
console.log('Debug:', variable);
console.warn('Warning');
console.error('Error');

// Performance Monitor
// Shake > Show Perf Monitor
// Target: 60 FPS, <16ms per frame

Network Debugging

// Intercept requests
XMLHttpRequest.prototype._send = XMLHttpRequest.prototype.send;
XMLHttpRequest.prototype.send = function() {
  console.log('Request:', this._url);
  this._send.apply(this, arguments);
};

Debug Checklist

  • Test on physical devices (not just simulators)
  • Test on older device models
  • Simulate slow 3G network
  • Test offline mode
  • Check memory under load
  • Test rotation and safe areas
  • Verify 60 FPS target

Performance Targets

MetricTarget
Frame rate60 FPS (16ms/frame)
Memory<100MB
App launch<2 seconds

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.

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