Preface
Part �� Getting Started
1�� Performance in Mobile Apps
Defining Performance
Performance Metrics
Memory
Power Consumption
Initialization Time
Execution Speed
Responsiveness
Local Storage
Interoperability
Network Condition
Bandwidth
Data Refresh
Multiuser Support
Single Sign-on
Security
Crashes
App Profiling
Sampling
Instrumentation
Measurement
Project and Code Setup
Crash Reporting Setup
Instrumenting Your App
Logging
Summary

Part �� Core Optimizations
2�� Memory Management
Memory Consumption
Stack Size
Heap Size
Memory Management Model
Autoreleasing Objects
Autorelease Pool Blocks
Automatic Reference Counting
Rules of ARC
Reference Types
Variable Qualifiers
Property Qualifiers
Getting Your Hands Dirty
Photo Model
Storyboard Update
Method Implementations
Output Analysis
Zombies
Rules of Memory Management
Retain Cycles
Rules to Avoid Retain Cycles
Common Scenarios for Retain Cycles
Observers
Returning Errors
Weak Type�� id
Solution to the Problem
Object Longevity and Leaks
Singletons
Finding Mystery Retains
Best Practices
Memory Usage in Production
Summary
3�� Energy
cpu
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Part �� iOS Performance
Part �� Beyond code
Part �� iOS 9
Index