You've probably used React-Mic before, an awesome React component for recording sound from a user's microphone while displaying a visualization. However React-Mic only runs on browsers that support the Media Recorder API and the WebM audio format.
With React-Mic-Plus you get everything in React-Mic, but your audio is created in the WAV audio format which means you can record audio in ANY grade A browser, including mobile & desktop Safari. Think about this. Now you can create voice-activated Web applications that run in ALL major browsers and platforms (including iOS and Android).