diff --git a/src/MediaAccessibility/MediaAccessibility.cs b/src/MediaAccessibility/MediaAccessibility.cs
index 39c7433ebc8e..52e618a5fc56 100644
--- a/src/MediaAccessibility/MediaAccessibility.cs
+++ b/src/MediaAccessibility/MediaAccessibility.cs
@@ -309,6 +309,33 @@ public static void DidDisplayCaptions (NSAttributedString [] strings)
 					MACaptionAppearanceDidDisplayCaptions (array.Handle);
 			}
 		}
+
+#if NET
+		[SupportedOSPlatform ("tvos18.0")]
+		[SupportedOSPlatform ("macos15.0")]
+		[SupportedOSPlatform ("ios18.0")]
+		[SupportedOSPlatform ("maccatalyst18.0")]
+#else
+		[TV (18, 0), iOS (18, 0), MacCatalyst (18, 0), Mac (15, 0), Watch (11, 0)]
+#endif
+		[DllImport (Constants.MediaAccessibilityLibrary)]
+		static extern byte MACaptionAppearanceIsCustomized (nint /* MACaptionAppearanceDomain */ domain);
+
+		/// <summary>Checks whether the specified style has been customized by the user.</summary>
+		/// <param name="domain">The style to check</param>
+		/// <returns>True if the specified style has been customized by the user, false otherwise.</returns>
+#if NET
+		[SupportedOSPlatform ("tvos18.0")]
+		[SupportedOSPlatform ("macos15.0")]
+		[SupportedOSPlatform ("ios18.0")]
+		[SupportedOSPlatform ("maccatalyst18.0")]
+#else
+		[TV (18, 0), iOS (18, 0), MacCatalyst (18, 0), Mac (15, 0), Watch (11, 0)]
+#endif
+		public static bool IsCustomized (MACaptionAppearanceDomain domain)
+		{
+			return MACaptionAppearanceIsCustomized ((nint) (long) domain) != 0;
+		}
 	}
 
 #if NET
diff --git a/tests/monotouch-test/MediaAccessibility/CaptionAppearanceTest.cs b/tests/monotouch-test/MediaAccessibility/CaptionAppearanceTest.cs
index 908936b4914b..1c8c60489073 100644
--- a/tests/monotouch-test/MediaAccessibility/CaptionAppearanceTest.cs
+++ b/tests/monotouch-test/MediaAccessibility/CaptionAppearanceTest.cs
@@ -66,6 +66,18 @@ public void DidDisplayCaptions ()
 			a = null;
 			MACaptionAppearance.DidDisplayCaptions (a);
 		}
+
+#if NET
+		[Test]
+		public void IsCustomized ()
+		{
+			TestRuntime.AssertXcodeVersion (16, 0);
+
+			foreach (var value in Enum.GetValues<MACaptionAppearanceDomain> ()) {
+				Assert.That (MACaptionAppearance.IsCustomized (value), Is.EqualTo (true).Or.EqualTo (false), value.ToString ());
+			}
+		}
+#endif // NET
 	}
 }
 
diff --git a/tests/xtro-sharpie/api-annotations-dotnet/MacCatalyst-MediaAccessibility.todo b/tests/xtro-sharpie/api-annotations-dotnet/MacCatalyst-MediaAccessibility.todo
deleted file mode 100644
index c4d63ce60dfa..000000000000
--- a/tests/xtro-sharpie/api-annotations-dotnet/MacCatalyst-MediaAccessibility.todo
+++ /dev/null
@@ -1 +0,0 @@
-!missing-pinvoke! MACaptionAppearanceIsCustomized is not bound
diff --git a/tests/xtro-sharpie/api-annotations-dotnet/iOS-MediaAccessibility.todo b/tests/xtro-sharpie/api-annotations-dotnet/iOS-MediaAccessibility.todo
deleted file mode 100644
index c4d63ce60dfa..000000000000
--- a/tests/xtro-sharpie/api-annotations-dotnet/iOS-MediaAccessibility.todo
+++ /dev/null
@@ -1 +0,0 @@
-!missing-pinvoke! MACaptionAppearanceIsCustomized is not bound
diff --git a/tests/xtro-sharpie/api-annotations-dotnet/macOS-MediaAccessibility.todo b/tests/xtro-sharpie/api-annotations-dotnet/macOS-MediaAccessibility.todo
deleted file mode 100644
index c4d63ce60dfa..000000000000
--- a/tests/xtro-sharpie/api-annotations-dotnet/macOS-MediaAccessibility.todo
+++ /dev/null
@@ -1 +0,0 @@
-!missing-pinvoke! MACaptionAppearanceIsCustomized is not bound
diff --git a/tests/xtro-sharpie/api-annotations-dotnet/tvOS-MediaAccessibility.todo b/tests/xtro-sharpie/api-annotations-dotnet/tvOS-MediaAccessibility.todo
deleted file mode 100644
index c4d63ce60dfa..000000000000
--- a/tests/xtro-sharpie/api-annotations-dotnet/tvOS-MediaAccessibility.todo
+++ /dev/null
@@ -1 +0,0 @@
-!missing-pinvoke! MACaptionAppearanceIsCustomized is not bound
diff --git a/tests/xtro-sharpie/iOS-MediaAccessibility.todo b/tests/xtro-sharpie/iOS-MediaAccessibility.todo
deleted file mode 100644
index c4d63ce60dfa..000000000000
--- a/tests/xtro-sharpie/iOS-MediaAccessibility.todo
+++ /dev/null
@@ -1 +0,0 @@
-!missing-pinvoke! MACaptionAppearanceIsCustomized is not bound
diff --git a/tests/xtro-sharpie/macOS-MediaAccessibility.todo b/tests/xtro-sharpie/macOS-MediaAccessibility.todo
deleted file mode 100644
index c4d63ce60dfa..000000000000
--- a/tests/xtro-sharpie/macOS-MediaAccessibility.todo
+++ /dev/null
@@ -1 +0,0 @@
-!missing-pinvoke! MACaptionAppearanceIsCustomized is not bound
diff --git a/tests/xtro-sharpie/tvOS-MediaAccessibility.todo b/tests/xtro-sharpie/tvOS-MediaAccessibility.todo
deleted file mode 100644
index c4d63ce60dfa..000000000000
--- a/tests/xtro-sharpie/tvOS-MediaAccessibility.todo
+++ /dev/null
@@ -1 +0,0 @@
-!missing-pinvoke! MACaptionAppearanceIsCustomized is not bound