Generally, in React or React Native apps, data will be passed from parent to child via props, but this can increase the code base's complexity as certain props are required by many components within the application. The React Context API enables you to avoid passing props from parent to child at every level of the component tree. It also helps you avoid unnecessarily increasing the complexity of the codebase using state management libraries like Redux.
This is a companion discussion topic for the original entry at https://blog.crowdbotics.com/how-to-use-formik-and-context-api-build-crowdbotics-react-native-apps-with-firebase/