Sodium library is build from source (you should not trust a binary build when dealing with cryptography) Source code is downloaded and verified before compilation
General prerequisites gpg (macports, homebrew)
macOS compilation prerequisites XCode libtool (macports, homebrew) autoconf (macports, homebrew) automake (macports, homebrew)
Android prerequisites Android Studio SDK, NDK, CMake, LLDB Environment variables
npm install react-native-sodium@https://github.com/lyubo/react-native-sodium.git react-native link react-native-sodium react-native run-ios or react-native run-android