diff --git a/.swiftpm/xcode/xcshareddata/xcschemes/AppleWatchScreenSize.xcscheme b/.swiftpm/xcode/xcshareddata/xcschemes/AppleWatchScreenSize.xcscheme
index d1d501f..5cfc9b9 100644
--- a/.swiftpm/xcode/xcshareddata/xcschemes/AppleWatchScreenSize.xcscheme
+++ b/.swiftpm/xcode/xcshareddata/xcschemes/AppleWatchScreenSize.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1420"
+   LastUpgradeVersion = "2640"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
diff --git a/DemoApp/DemoApp Watch App/ContentView.swift b/DemoApp/DemoApp Watch App/ContentView.swift
index 99e36e0..1fad204 100644
--- a/DemoApp/DemoApp Watch App/ContentView.swift	
+++ b/DemoApp/DemoApp Watch App/ContentView.swift	
@@ -11,11 +11,36 @@ import AppleWatchScreenSize
 struct ContentView: View {
     let screenSize = ScreenSize()
     
+    var cornerRadius: CGFloat {
+        //return 51 // experiment here
+        CGFloat(screenSize.cornerSize ?? 0)
+    }
+    
     var body: some View {
-        RoundedRectangle(cornerSize: CGSize(width: Double(screenSize.cornerSize ?? 0), height: Double(screenSize.cornerSize ?? 0)))
-            .stroke(lineWidth: 10.0)
-            .foregroundColor(.red)
-            .edgesIgnoringSafeArea(.all)
+        ZStack {
+            // This rectange will show up if the radius set too big
+            Rectangle()
+                .fill(.white)
+            
+            RoundedRectangle(cornerRadius: cornerRadius)
+                .fill(.red)
+            
+            guide.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading)
+            
+            guide.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topTrailing)
+            
+            guide.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .bottomLeading)
+            
+            guide.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .bottomTrailing)
+        }
+        .edgesIgnoringSafeArea(.all)
+    }
+    
+    var guide: some View {
+        Rectangle()
+            .stroke(lineWidth: 0.5)
+            .fill(.blue)
+            .frame(width: cornerRadius, height: cornerRadius)
     }
 }
 
diff --git a/DemoApp/DemoApp.xcodeproj/project.pbxproj b/DemoApp/DemoApp.xcodeproj/project.pbxproj
index 53da469..4920786 100644
--- a/DemoApp/DemoApp.xcodeproj/project.pbxproj
+++ b/DemoApp/DemoApp.xcodeproj/project.pbxproj
@@ -100,7 +100,7 @@
 			attributes = {
 				BuildIndependentTargetsInParallel = 1;
 				LastSwiftUpdateCheck = 1500;
-				LastUpgradeCheck = 1500;
+				LastUpgradeCheck = 2640;
 				TargetAttributes = {
 					E7257A062B823BE8005147CF = {
 						CreatedOnToolsVersion = 15.0;
@@ -187,7 +187,9 @@
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
+				DEVELOPMENT_TEAM = BF3L252F9X;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
 				ENABLE_USER_SCRIPT_SANDBOXING = YES;
@@ -209,6 +211,7 @@
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "DEBUG $(inherited)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 			};
@@ -248,7 +251,9 @@
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				DEVELOPMENT_TEAM = BF3L252F9X;
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_USER_SCRIPT_SANDBOXING = YES;
@@ -263,6 +268,7 @@
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
 				SWIFT_COMPILATION_MODE = wholemodule;
 			};
 			name = Release;
@@ -275,12 +281,11 @@
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
 				DEVELOPMENT_ASSET_PATHS = "\"DemoApp Watch App/Preview Content\"";
-				DEVELOPMENT_TEAM = BF3L252F9X;
 				ENABLE_PREVIEWS = YES;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_KEY_CFBundleDisplayName = DemoApp;
 				INFOPLIST_KEY_UISupportedInterfaceOrientations = "UIInterfaceOrientationPortrait UIInterfaceOrientationPortraitUpsideDown";
-				INFOPLIST_KEY_WKCompanionAppBundleIdentifier = "";
+				INFOPLIST_KEY_WKWatchOnly = YES;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -305,12 +310,11 @@
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
 				DEVELOPMENT_ASSET_PATHS = "\"DemoApp Watch App/Preview Content\"";
-				DEVELOPMENT_TEAM = BF3L252F9X;
 				ENABLE_PREVIEWS = YES;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_KEY_CFBundleDisplayName = DemoApp;
 				INFOPLIST_KEY_UISupportedInterfaceOrientations = "UIInterfaceOrientationPortrait UIInterfaceOrientationPortraitUpsideDown";
-				INFOPLIST_KEY_WKCompanionAppBundleIdentifier = "";
+				INFOPLIST_KEY_WKWatchOnly = YES;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
diff --git a/Sources/AppleWatchScreenSize/AppleWatchScreenSize.swift b/Sources/AppleWatchScreenSize/AppleWatchScreenSize.swift
index cb6a3d1..9f669b2 100644
--- a/Sources/AppleWatchScreenSize/AppleWatchScreenSize.swift
+++ b/Sources/AppleWatchScreenSize/AppleWatchScreenSize.swift
@@ -28,18 +28,19 @@ public struct ScreenSize: Hashable {
      
      If no corner size is associated with the current screen size, it returns `nil`.
      */
-    public var cornerSize: Int? {
+    public var cornerSize: CGFloat? {
         get {
-            let dic: [ScreenSize: Int?] = [
-                ScreenSize(width: 136, height: 170): nil,
-                ScreenSize(width: 156, height: 195): nil,
-                ScreenSize(width: 162, height: 197): 28,
-                ScreenSize(width: 176, height: 215): 38,
-                ScreenSize(width: 184, height: 224): 34,
-                ScreenSize(width: 198, height: 242): 41,
-                ScreenSize(width: 205, height: 251): 54,
-                ScreenSize(width: 187, height: 223): 45,
-                ScreenSize(width: 208, height: 248): 49
+            let dic: [ScreenSize: CGFloat?] = [
+                ScreenSize(width: 136, height: 170): nil, // 1, 2, and 3 - 38mm
+                ScreenSize(width: 156, height: 195): nil, // 1, 2, and 3 - 42mm
+                ScreenSize(width: 162, height: 197): 28, // 4, 5, 6, and SE (all) - 40mm
+                ScreenSize(width: 176, height: 215): 38, // 7, 8, and 9 - 41mm
+                ScreenSize(width: 184, height: 224): 34, // 4, 5, 6, and SE (all) - 44mm
+                ScreenSize(width: 187, height: 223): 45, // 10, 11 - 42mm
+                ScreenSize(width: 198, height: 242): 41, // 7, 8, and 9 - 45mm
+                ScreenSize(width: 205, height: 251): 54.5, // Ultra 1 & 2 - 49mm
+                ScreenSize(width: 208, height: 248): 51, // 10, 11 - 46mm
+                ScreenSize(width: 211, height: 257): 57, // Ultra 3 - 49mm
             ]
             return dic[self] ?? nil
         }
@@ -51,7 +52,10 @@ public struct ScreenSize: Hashable {
      - Parameter width: The width dimension of the screen size. It defaults to the screen bounds' width of the current device.
      - Parameter height: The height dimension of the screen size. It defaults to the screen bounds' height of the current device.
      */
-    public init(width: CGFloat = WKInterfaceDevice.current().screenBounds.size.width, height: CGFloat = WKInterfaceDevice.current().screenBounds.size.height) {
+    public init(
+        width: CGFloat = WKInterfaceDevice.current().screenBounds.size.width,
+        height: CGFloat = WKInterfaceDevice.current().screenBounds.size.height
+    ) {
         self.width = width
         self.height = height
     }