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I am new to app development and needed an idea of what all I need to do to avoid decoding of my code once my app is uploaded on App Store. I have a simple Sudoku app with no backend on a server or cloud. I am neither authenticating the user because there is no user sensitive data I am storing. There is neither third party library involved. With all this - will my code be ‘safe’ if uploaded my app on App Store or malicious actors will be able to decode and place my app on third party websites without my permission ? Should I make a backend on a server or cloud and authenticate the user to avoid the above issue. Or will my current app that essentially involves a sudoku generator, solver and UI - all the code within the users phone that too without authenticating the user will not lead to the above issue ?