This is my first crack at a react-native app. It's bootstrapped with create-react-native-app, and can be run with expo.

Install

// First, make sure you have expo CLI installed:
$ npm install -g expo-cli

// Then, in the project directory:
$ npm i && expo start

If you haven't downloaded the expo app on your phone, do so from the app store. Then you'll be able to scan the QR code that appears in the terminal after expo start.

(Disclaimer: I've only been able to test this on android so far, so expo might/probably will run differently...)