iOS Storage Guide

Purpose: Navigation hub for ALL storage decisions — database vs files, local vs cloud, specific locations iOS Version: iOS 17+ (iOS 26+ for latest features) Context: Complete storage decision framework integrating SwiftData (WWDC 2023), CKSyncEngine (WWDC 2023), and file management best practices

When to Use This Skill

✅ Use this skill when:

• Starting a new project and choosing storage approach
• Asking "where should I store this data?"
• Deciding between SwiftData, Core Data, SQLite, or files
• Choosing between CloudKit and iCloud Drive for sync
• Determining Documents vs Caches vs Application Support
• Planning data architecture for offline/online scenarios
• Migrating from one storage solution to another
• Debugging "files disappeared" or "data not syncing"