# ammarahm-ed/react-native-mmkv-storage

An ultra fast (0.0002s read/write), small & encrypted mobile key-value storage framework for React Native written in C++ using JSI

Repository: https://github.com/ammarahm-ed/react-native-mmkv-storage
Canonical: https://ross.abutalabs.com/products/react-native-mmkv-storage
Homepage: https://rnmmkv.now.sh
Language: C++
License: MIT
License Family: permissive
Topics: react-native, asyncstorage, mmkv-database, java, objective-c, storage, android, ios, fast-storage, react, native, fast, database, data-storage, mmap, mmkv, encryption, react-native-jsi, expo
Last push: 2026-08-13T07:17:54+00:00

## Health v2 (maintenance only)
Score: 73/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 97, release rhythm 27, longevity 100
- inputs: {"age_days": 2367, "days_push": 20, "days_rel": 272, "gap_med": 197.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1751, forks 120 (observed 2026-08-28T04:05:31.684561+00:00)

## What it is
A fast, lightweight key-value storage library for React Native built in C++ on top of Tencent's MMKV using JSI. It supports multiple database instances, optional encryption, and reactive hooks for reading and writing data at very high speed.

## Use cases
- store key-value data in a react native app
- replace asyncstorage with a faster storage option
- persist encrypted data on mobile
- cache data locally in react native
- reactively update UI when stored data changes
- store multiple data types in separate database instances

## When to choose
- you need extremely fast local storage in React Native
- you want encrypted key-value storage on Android and iOS
- you need reactive storage bindings via hooks
- you want a small native footprint with JSI-based performance

## When to avoid
- you are on React Native older than 0.71
- you need relational or complex queryable storage
- you target web or non-mobile platforms
- you prefer a pure JavaScript solution without native modules

## Facets
- artifact type: library
- maturity: active
- function: database, caching, serialization, security
- domain: mobile-development, databases, cross-platform
- platform: -
- tags: mmkv, key-value-storage, jsi, react-native, encrypted-storage, mobile-storage, android, ios

## Member repositories
- ammarahm-ed/react-native-mmkv-storage (main) score 73

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:31.684561+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:28:32.922826+00:00, confidence not recorded.
  - readme: https://github.com/ammarahm-ed/react-native-mmkv-storage (fetched 2026-08-28T04:05:31.684561+00:00, sha e443c441b616)
  - homepage: https://rnmmkv.now.sh (fetched 2026-08-29T11:06:22.660475+00:00, sha 54c773063ff0)
- Data as of 2026-08-30T08:39:29.467469+00:00.