React Native Storage Manager

This skill provides established patterns for data persistence using MMKV and Expo SecureStore in the Fitness Tracker App.

When to Use This Skill

Use this skill when you need to:

• Persist data locally on the device
• Implement encrypted storage for sensitive data
• Handle user preferences or application state persistence
• Manage MMKV storage instances and keys
• Perform common CRUD operations on local storage

Storage Initialization

The app uses an encrypted MMKV instance initialized in app/utils/storage/index.ts.

Secure Encryption Key

We use Expo SecureStore to persist the encryption key securely.