React Native MMKV for React Native

React Native MMKV is the fastest key-value storage library for React Native, leveraging the MMKV storage framework originally built by WeChat — delivering read and write speeds approximately 30x faster than AsyncStorage.

With synchronous reads, AES encryption support, and a simple key-value API, MMKV is the go-to replacement for AsyncStorage in performance-critical React Native apps — handling user preferences, session tokens, and cached data without the async overhead that causes UI jank.

How React Native MMKV will help you grow and be more successful?

1. Eliminate UI stutter caused by slow storage reads. MMKV's synchronous API means you read user preferences and session tokens instantly on the JS thread — no await, no loading states, no flickering UI while your app waits for AsyncStorage to return a value.
2. Secure sensitive data with built-in AES encryption. MMKV supports transparent encryption with a single encryptionKey parameter — store auth tokens, API keys, and user data with encryption-at-rest without integrating a separate keychain library.
3. Drop in as an AsyncStorage replacement in minutes. MMKV's API mirrors AsyncStorage closely, and community wrappers make migration trivial — so you get a 30x storage performance improvement with a minimal diff to your existing code.