Compare WCDB vs MMKV and see what are their differences.


WCDB is a cross-platform database framework developed by WeChat. (by Tencent)


An efficient, small mobile key-value storage framework developed by WeChat. Works on Android, iOS, macOS, Windows, and POSIX. (by Tencent)
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2 4
9,799 16,204
0.6% 1.2%
0.0 0.0
15 days ago 3 days ago
C C++
GNU General Public License v3.0 or later GNU General Public License v3.0 or later
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of WCDB. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-01-21.


Posts with mentions or reviews of MMKV. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-01-12.
  • TOP 6 React Native libraries with native performance ⚡️
    9 projects | dev.to | 12 Jan 2023
    This library uses MMKV key-value storage and JSI to communicate between the JS side and the native side very quickly and synchronously. It is a suitable replacement for slow AsyncStorage. Follow this guide to migrate from AsyncStorage and get 30x faster on read and write operations in your app.
  • MMKV Visualizer - simple visualizer for mobile forensicators
    2 projects | /r/computerforensics | 27 Oct 2022
    For those unfamiliar with MMKV, here's a link to their GitHub - https://github.com/Tencent/MMKV. Used in many mobile applications, such as Discord.
  • React Native SWR Persistent Cache with MMKV
    3 projects | dev.to | 22 Apr 2022
    SWR library works great with React Native. By default, SWR library uses global cache store, but you will lose your cache when you reload your app. Here is a super-easy way to sync SWR cache with MMKV.
  • Getting Started with React Native JSI Modules
    3 projects | dev.to | 27 Jun 2021
    This library aims to provide a fast & reliable solution for you data storage needs in react-native apps. It uses MMKV by Tencent under the hood on Android and iOS both that is used by their WeChat app(more than 1 Billion users). Unlike other storage solutions for React Native, this library lets you store any kind of data type, in any number of database instances, with or without encryption in a very fast and efficient way. Read about it on this blog post I wrote on dev.to

What are some alternatives?

When comparing WCDB and MMKV you can also consider the following projects:

Realm - Realm is a mobile database: a replacement for Core Data & SQLite

SQLite.swift - A type-safe, Swift-language layer over SQLite3.

ObjectBox embedded database - Swift database - fast, simple and lightweight (iOS, macOS)

GRDB.swift - A toolkit for SQLite databases, with a focus on application development

SQLite - A stand-alone Swift wrapper around the SQLite 3 client library.

FMDB - A Cocoa / Objective-C wrapper around SQLite

SwiftyUserDefaults - Modern Swift API for NSUserDefaults

UserDefaults - Simple, Strongly Typed UserDefaults for iOS, macOS and tvOS

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