Here is a list of projects that share the universal tag.

App Platform - UniApp

App Platform - All in one React Native Universal Mobile App. This is all in one Multi-Purpose Expo React Native Mobile app. It works for iPhone and Android. In fact, this is a bundle of multiple apps, that follow same design and coding pattern. Buy this app for for $49$ on https://codecanyon.net/item/universal-app-platform-full-multipurpose-all-in-one-react-native-mobile-app/21247686