Privacy of included data used by app

I have developed an app that includes a list of phone numbers and emails, and I need to know that there is no way that information can be accessed by anyone before, during or after the build process.
When I submit my app for building of the ipa and apk files is that data accessible and made available to anyone at any time?
Steve Bond

Hi there. When you publish, your app’s JS code will be minified to a production bundle and uploaded to our server for distribution. Expo won’t share your app’s code with anyone other than to distribute it to your users when you ask us to. However, as with any mobile app, secret information is no longer secret when it’s downloaded, stored and run on somebody’s device. It depends on the security of the device in question.