Criar um protótipo de aplicativo

I have at the moment an APP already published in Google Play and in need of a new urgent layout. The app was developed in Xamarin Forms and the layout will be unique to the iOS platform, and ANDROID WINDOWS PHONE. I need 4 screens as follows: 1 - Settings menu for the user I would like to display in the header of the project LOGO child's information is optional 2 - List of records that meet several modules such as communications, events and experiences. 3 - log detailing Sheet 4 - Module for chat / message log Project icons are standard Google ([login to view URL]) and can be modified. I urge the implementation of the service.