Hi,
I am super with Android [ kotlin ], [ java ] apps working with quite a few years,
I have read your proposal, you want to change the app package name and build the project for Play Store.
I can change the package name build project bundle file for play store in your Android app in accordance with your needs.
So, it's would be extendable latter if you want to add new functionality in your app.
I will provide you a quality work.
Let's chat to proceed.