mrousavy/react-native-mmkv
⚡️ The fastest key/value storage for React Native. ~30x faster than AsyncStorage! observed · 2026-08-28
Health v2 · maintenance only
96/100
- Activity 99
- Release rhythm 89
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: 29.5
- age_days: 2016
- days_rel: 72
- days_push: 10
- n_releases_24m: 15
Adoption not part of the score
8482 stars · 338 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
A React Native library providing fast, synchronous key/value storage backed by Tencent's MMKV C++ framework via JSI and Nitro Modules. It supports strings, booleans, numbers, and ArrayBuffers with encryption, multiple instances, and iOS/Android/Web support.
Use cases
- store user settings and preferences in a React Native app
- replace AsyncStorage with faster key-value storage
- persist small data synchronously without async/await
- encrypt locally stored user data on mobile
- separate per-user storage instances from global app data
- cache strings, numbers, and buffers on device
When to choose
- you need the fastest possible key/value storage in React Native
- you want synchronous reads/writes without the bridge
- you need encrypted or multi-instance local storage on iOS/Android/Web
When to avoid
- you need relational or complex queryable data (use SQLite instead)
- you target platforms outside iOS, Android, and Web
- you need large-file or blob storage rather than small key/value pairs
Facets
library · maturity stable
database caching serialization mobile-development databases web-development cross-platform react-native mmkv key-value-storage jsi nitro-modules localstorage encryption synchronous-api ios android web
3 sources
- readme: https://github.com/mrousavy/react-native-mmkv · fetched 2026-08-28 · f01280621414
- homepage: https://mrousavy.com · fetched 2026-08-29 · cacb056158e6
- registry_npm: https://registry.npmjs.org/react-native-mmkv · fetched 2026-08-29 · 16c638414111
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| mrousavy/react-native-mmkv | main | 96 |
For agents
markdown · JSON · MCP: product_card(name="mrousavy/react-native-mmkv")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem