How do you run react-native app in production mode?

• You can also use the React Native CLI to generate and run a Release build (e.g. react-native run-android --variant=release).

It's in the dev menu under the settings option. The key is that you then have to reload the JS. You can verify in your packager output that dev=false.

There are two configurations Release and Debug. By default apps run in debug mode. To run in Release mode

react-native run-android --variant release #android
react-native run-ios --configuration Release #ios

To find other available options

react-native run-ios -h
react-native run-android -h