If you're ready to go public with your React Native Apps, then chances are you're going to need and meet the offline bundle.
If you're ready to take it to next level then you might check Arnaud Rinquin's work to put the React Native bundle on continuous deployment with CircleCI and host it on an Amazon S3 bucket.

sk-react-native on GitHub

An experimentation to see how cool is React Native:

• Bring continuous deployment to iOS
• Build native app without any Objective-C / Swift knowledge
• Enjoy a super-fast dev workflow