Due to the specific requirements of an app I have in mind, I need to draw custom navigation and tab bars using XF's built-in controls like Grid, StackLayout, etc.. This would be drawn on a ContentPage and simulate a TabbedPage with custom bindable properties like CurrentTab etc. Unfortunately, it's not possible for me to use custom renderers and modify the existing TabbedPage to my requirements, and so I'm looking at creating a single page app using just a ContentPage and swapping views in and out as the user navigates to other "pages".
My concern is, does App Store and Google Play have strict guidelines when it comes to using a tabbed page such that only the default controls must be leveraged (UITabBarController and ViewPager)? I don't want to work months on an app only to realize it's not meeting their UI requirements.