Xamarin_Forms_App.cs

using System;
using Xamarin.Forms;

namespace SpacingTest
{
    public class App
    {
        public static Page GetMainPage()
        {	
            return new ContentPage
            { 
                Content = new StackLayout
                {
                    Children =
                    {
                        new Label
                        {
                            Text = String.Empty,
                            Font = Font.SystemFontOfSize(50),
                            VerticalOptions = LayoutOptions.Start,
                        },
                        new Label
                        {
                            Text = "Label2",
                            Font = Font.SystemFontOfSize(50),
                            VerticalOptions = LayoutOptions.Start,
                        },
                    }
                },
            };
        }
    }
}

Android

iOS