To open the app locally, install all dependencies by running npm install. After that, start expo by running npm start. Expo will give you the following options:
- press W to run on web
- press I to run on iOS simulator
- make sure you have already opened XCode and the Simulator service (XCode > Open Developer Tools > Simulator)
- press A to run on Android simulator
- make sure you have Android Studio installed along with all the required SDKs