You can move your live iOS app to AppMySite. Once you create an AppMySite account and build your app, navigate to the Download section and locate the Already have a live app button.
Next, click on the iOS icon to open a pop-up. Fill out the form giving relevant details of your live iOS app on the Apple Play Store. Turn the “Enable during next build” toggle on if you wish to retain custom settings for your app. If you disable this option, your app will be created with default settings. Proceed to click on “Done” and build the app. You can also go through our support article to know about the process in detail.