diff --git a/Documentation/Reference/README.md b/Documentation/Reference/README.md
index 4da1ff6..bf5a34c 100644
--- a/Documentation/Reference/README.md
+++ b/Documentation/Reference/README.md
@@ -34,7 +34,6 @@
 -   [Submenu](structs/Submenu.md)
 -   [Text](structs/Text.md)
 -   [ToolbarView](structs/ToolbarView.md)
--   [UpdateObserver](structs/UpdateObserver.md)
 -   [VStack](structs/VStack.md)
 -   [Window](structs/Window.md)
 
diff --git a/Documentation/Reference/extensions/View.md b/Documentation/Reference/extensions/View.md
index c8da187..3322c3e 100644
--- a/Documentation/Reference/extensions/View.md
+++ b/Documentation/Reference/extensions/View.md
@@ -102,10 +102,10 @@ Add a style class to the view.
 - Parameter style: The style class.
 - Returns: A view.
 
-### `onAppear(_:)`
+### `onUpdate(_:)`
 
-Run a function when the view appears for the first time.
-- Parameter closure: The function.
+Run a function when the view gets an update.
+- Parameter onUpdate: The function.
 - Returns: A view.
 
 ### `stopModifiers()`
@@ -128,9 +128,3 @@ Add a bottom toolbar to the view.
   - toolbar: The toolbar's content.
   - visible: Whether the toolbar is visible.
 - Returns: A view.
-
-### `onUpdate(_:)`
-
-Run a function when the view gets an update.
-- Parameter onUpdate: The function.
-- Returns: A view.
diff --git a/Sources/Adwaita/View/Modifiers/UpdateObserver.swift b/Sources/Adwaita/View/Modifiers/AppearObserver.swift
similarity index 61%
rename from Sources/Adwaita/View/Modifiers/UpdateObserver.swift
rename to Sources/Adwaita/View/Modifiers/AppearObserver.swift
index 4144aa0..4e39829 100644
--- a/Sources/Adwaita/View/Modifiers/UpdateObserver.swift
+++ b/Sources/Adwaita/View/Modifiers/AppearObserver.swift
@@ -1,17 +1,17 @@
 //
-//  UpdateObserver.swift
+//  AppearObserver.swift
 //  Adwaita
 //
-//  Created by david-swift on 10.09.23.
+//  Created by david-swift on 29.11.23.
 //
 
 import Libadwaita
 
-/// A widget which executes a custom code when being updated.
-struct UpdateObserver: Widget {
+/// A widget which executes a custom code when being rendered for the first time.
+struct AppearObserver: Widget {
 
     /// The function.
-    var onUpdate: () -> Void
+    var onAppear: () -> Void
     /// The content.
     var content: View
 
@@ -19,7 +19,7 @@ struct UpdateObserver: Widget {
     /// - Parameter modifiers: Modify views before being updated.
     /// - Returns: The content's container.
     func container(modifiers: [(View) -> View]) -> ViewStorage {
-        onUpdate()
+        onAppear()
         return content.storage(modifiers: modifiers)
     }
 
@@ -28,7 +28,6 @@ struct UpdateObserver: Widget {
     ///     - storage: The content's storage.
     ///     - modifiers: Modify views before being updated.
     func update(_ storage: ViewStorage, modifiers: [(View) -> View]) {
-        onUpdate()
         content.updateStorage(storage, modifiers: modifiers)
     }
 
@@ -36,11 +35,11 @@ struct UpdateObserver: Widget {
 
 extension View {
 
-    /// Run a function when the view gets an update.
-    /// - Parameter onUpdate: The function.
+    /// Run a function when the view appears for the first time.
+    /// - Parameter closure: The function.
     /// - Returns: A view.
-    public func onUpdate(_ onUpdate: @escaping () -> Void) -> View {
-        UpdateObserver(onUpdate: onUpdate, content: self)
+    public func onAppear(_ closure: @escaping () -> Void) -> View {
+        AppearObserver(onAppear: closure, content: self)
     }
 
 }
diff --git a/Sources/Adwaita/View/Modifiers/InspectorWrapper.swift b/Sources/Adwaita/View/Modifiers/InspectorWrapper.swift
index 90d3af5..b4b84e3 100644
--- a/Sources/Adwaita/View/Modifiers/InspectorWrapper.swift
+++ b/Sources/Adwaita/View/Modifiers/InspectorWrapper.swift
@@ -111,11 +111,11 @@ extension View {
         inspect { _ = $0?.addStyle(style) }
     }
 
-    /// Run a function when the view appears for the first time.
-    /// - Parameter closure: The function.
+    /// Run a function when the view gets an update.
+    /// - Parameter onUpdate: The function.
     /// - Returns: A view.
-    public func onAppear(_ closure: @escaping () -> Void) -> View {
-        inspect { _ in closure() }
+    public func onUpdate(_ onUpdate: @escaping () -> Void) -> View {
+        inspect { _ in onUpdate() }
     }
 
 }