If you already have an iOS app live on the Apple app store, which you would like to replace with an app you build on AppMySite, this feature can be extremely helpful.
You can easily create a new app with AppMySite and publish it under the same app listing. The app you build with AppMySite will replace your existing app on the App Store. This means your customers can simply update their apps from the App Store to see the new app that you build with us.
Once you design your app and connect it to your website, navigate to Download in your AppMySite account and follow the steps below:
Read: Resubmit your iOS app to the Apple App Store