Searching for insight on the best and most compliant way to essentially merge two apps. They have the same functionality but one is much more advanced than the other, although the legacy app has a higher user count. Instead of letting both run, we want to push the legacy app an update with the code from the new app and ultimately kill the newer one. What is the best way to do this? Is it allowed to simply push the source code from new app to legacy and update the identifier? We do not wan't to break any app store rules and want to limit the potential of losing users by forcing them to download a new app.