The App Configuration screen contains several key parameters for your mobile app:
App Name - This is the name that your app, if branded, will appear under in the App Stores.
Description - This is the description that your app, if branded, will use in the App Stores.
Donation URL - Not currently in use.
Homepage Type - There are two styles for your mobile app, default and Tile. The default app has several quick access icons at the top, a top-left menu, and previewable items (sermons, documents, calendar, and news) down the middle:
The Tile version is comprised of mix and match tiles that you can use to link to areas of your site:
App Icon - This is the image that will be used as the icon for your app if it is Branded. It should be at least 3000 x 3000 pixels in size.
App Splash Screen - This is the image that will show when your app is loading if it is Branded. It should be at least 3000 x 3000 pixels in size.
News Page Title - If you use the News section of the app, this will be the title of the page.
Documents Title - If you use the Document library in your app, this will be the title of the page.