diff --git a/.idea/libraries/Dart_Packages.xml b/.idea/libraries/Dart_Packages.xml
index ea10ad6..ad74def 100644
--- a/.idea/libraries/Dart_Packages.xml
+++ b/.idea/libraries/Dart_Packages.xml
@@ -138,7 +138,7 @@
         <entry key="build_runner_core">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/build_runner_core-7.2.9/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/build_runner_core-7.2.8/lib" />
             </list>
           </value>
         </entry>
@@ -152,7 +152,7 @@
         <entry key="built_value">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/built_value-8.6.0/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/built_value-8.5.0/lib" />
             </list>
           </value>
         </entry>
@@ -257,7 +257,7 @@
         <entry key="csslib">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/csslib-0.17.3/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/csslib-0.17.2/lib" />
             </list>
           </value>
         </entry>
@@ -299,7 +299,7 @@
         <entry key="dynamite_runtime">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/git/nextcloud-neon-3f80f9f6ded0a077464e825cd3c1c60aa797c743/packages/dynamite/dynamite_runtime/lib" />
+              <option value="$USER_HOME$/.pub-cache/git/nextcloud-neon-35eb2d65799f3e6a5f53b62da8cac868d3e52f86/packages/dynamite/dynamite_runtime/lib" />
             </list>
           </value>
         </entry>
@@ -327,7 +327,7 @@
         <entry key="file_picker">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/file_picker-5.3.1/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/file_picker-5.3.0/lib" />
             </list>
           </value>
         </entry>
@@ -460,7 +460,7 @@
         <entry key="graphs">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/graphs-2.3.1/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/graphs-2.3.0/lib" />
             </list>
           </value>
         </entry>
@@ -509,7 +509,7 @@
         <entry key="image_picker_android">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/image_picker_android-0.8.6+17/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/image_picker_android-0.8.6+16/lib" />
             </list>
           </value>
         </entry>
@@ -551,7 +551,7 @@
         <entry key="jiffy">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/jiffy-6.1.0/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/jiffy-6.2.1/lib" />
             </list>
           </value>
         </entry>
@@ -607,7 +607,7 @@
         <entry key="logging">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/logging-1.2.0/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/logging-1.1.1/lib" />
             </list>
           </value>
         </entry>
@@ -649,7 +649,7 @@
         <entry key="nextcloud">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/git/nextcloud-neon-3f80f9f6ded0a077464e825cd3c1c60aa797c743/packages/nextcloud/lib" />
+              <option value="$USER_HOME$/.pub-cache/git/nextcloud-neon-35eb2d65799f3e6a5f53b62da8cac868d3e52f86/packages/nextcloud/lib" />
             </list>
           </value>
         </entry>
@@ -705,7 +705,7 @@
         <entry key="path_provider_linux">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider_linux-2.1.11/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider_linux-2.1.10/lib" />
             </list>
           </value>
         </entry>
@@ -971,7 +971,7 @@
         <entry key="syncfusion_flutter_calendar">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_calendar-21.2.8/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_calendar-21.2.5/lib" />
             </list>
           </value>
         </entry>
@@ -985,7 +985,7 @@
         <entry key="syncfusion_flutter_datepicker">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_datepicker-21.2.8/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_datepicker-21.2.5/lib" />
             </list>
           </value>
         </entry>
@@ -1055,7 +1055,7 @@
         <entry key="timezone">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/timezone-0.9.2/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/timezone-0.9.1/lib" />
             </list>
           </value>
         </entry>
@@ -1090,7 +1090,7 @@
         <entry key="url_launcher_android">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_android-6.0.35/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_android-6.0.34/lib" />
             </list>
           </value>
         </entry>
@@ -1125,7 +1125,7 @@
         <entry key="url_launcher_web">
           <value>
             <list>
-              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_web-2.0.17/lib" />
+              <option value="$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_web-2.0.16/lib" />
             </list>
           </value>
         </entry>
@@ -1210,8 +1210,8 @@
     </properties>
     <CLASSES>
       <root url="file://$USER_HOME$/.pub-cache/git/flowder-1ddd171a763c4f1ba09b95e34e35e2e5cf0d1bba//lib" />
-      <root url="file://$USER_HOME$/.pub-cache/git/nextcloud-neon-3f80f9f6ded0a077464e825cd3c1c60aa797c743/packages/dynamite/dynamite_runtime/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/git/nextcloud-neon-3f80f9f6ded0a077464e825cd3c1c60aa797c743/packages/nextcloud/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/git/nextcloud-neon-35eb2d65799f3e6a5f53b62da8cac868d3e52f86/packages/dynamite/dynamite_runtime/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/git/nextcloud-neon-35eb2d65799f3e6a5f53b62da8cac868d3e52f86/packages/nextcloud/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/_fe_analyzer_shared-61.0.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/analyzer-5.13.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/animated_digit-3.2.1/lib" />
@@ -1231,9 +1231,9 @@
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/build_daemon-4.0.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/build_resolvers-2.2.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/build_runner-2.4.4/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/build_runner_core-7.2.9/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/build_runner_core-7.2.8/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/built_collection-5.1.1/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/built_value-8.6.0/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/built_value-8.5.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/cached_network_image-3.2.3/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/cached_network_image_platform_interface-2.0.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/cached_network_image_web-1.0.2/lib" />
@@ -1248,7 +1248,7 @@
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/cross_file-0.3.3+4/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/crypto-3.0.3/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/crypton-2.1.0/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/csslib-0.17.3/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/csslib-0.17.2/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/cupertino_icons-1.0.5/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/dart_style-2.3.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/device_info_plus-8.2.2/lib" />
@@ -1257,7 +1257,7 @@
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/fake_async-1.3.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/ffi-2.0.2/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/file-6.1.4/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/file_picker-5.3.1/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/file_picker-5.3.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/filesize-2.0.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/fixnum-1.1.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/flutter_blurhash-0.7.0/lib" />
@@ -1271,20 +1271,20 @@
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/font_awesome_flutter-10.4.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/frontend_server_client-3.2.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/glob-2.1.2/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/graphs-2.3.1/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/graphs-2.3.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/html-0.15.3/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/http-0.13.6/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/http_multi_server-3.2.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/http_parser-4.0.2/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/image-4.0.17/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/image_picker-0.8.7+5/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/image_picker_android-0.8.6+17/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/image_picker_android-0.8.6+16/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/image_picker_for_web-2.1.12/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/image_picker_ios-0.8.7+4/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/image_picker_platform_interface-2.6.3/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/intl-0.18.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/io-1.0.4/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/jiffy-6.1.0/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/jiffy-6.2.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/js-0.6.7/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/json_annotation-4.8.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/json_serializable-6.7.0/lib" />
@@ -1292,7 +1292,7 @@
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/lints-2.1.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/loader_overlay-2.2.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/localstore-1.3.5/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/logging-1.2.0/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/logging-1.1.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/matcher-0.12.15/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/material_color_utilities-0.2.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/meta-1.9.1/lib" />
@@ -1305,7 +1305,7 @@
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider-2.0.15/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider_android-2.0.27/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider_foundation-2.2.3/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider_linux-2.1.11/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider_linux-2.1.10/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider_platform_interface-2.0.6/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider_windows-2.1.6/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/pedantic-1.11.1/lib" />
@@ -1342,9 +1342,9 @@
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/stream_channel-2.1.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/stream_transform-2.1.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/string_scanner-1.2.0/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_calendar-21.2.8/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_calendar-21.2.5/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_core-21.2.8/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_datepicker-21.2.8/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_datepicker-21.2.5/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_pdf-21.2.8/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-21.2.8/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_pdfviewer_macos-21.2.8/lib" />
@@ -1354,17 +1354,17 @@
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/synchronized-3.1.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/term_glyph-1.2.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/test_api-0.5.1/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/timezone-0.9.2/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/timezone-0.9.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/timing-1.0.1/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/typed_data-1.3.2/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/universal_io-2.2.0/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher-6.1.11/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_android-6.0.35/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_android-6.0.34/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_ios-6.1.4/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_linux-3.0.5/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_macos-3.0.5/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_platform_interface-2.1.2/lib" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_web-2.0.17/lib" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_web-2.0.16/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_windows-3.0.6/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/uuid-3.0.7/lib" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/vector_math-2.1.4/lib" />
diff --git a/.idea/libraries/Flutter_Plugins.xml b/.idea/libraries/Flutter_Plugins.xml
index 74a32cf..2f6ff84 100644
--- a/.idea/libraries/Flutter_Plugins.xml
+++ b/.idea/libraries/Flutter_Plugins.xml
@@ -26,11 +26,11 @@
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/device_info_plus-8.2.2" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_pdfviewer_web-21.2.8" />
       <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/syncfusion_flutter_pdfviewer-21.2.8" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_web-2.0.17" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_android-6.0.35" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/image_picker_android-0.8.6+17" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider_linux-2.1.11" />
-      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/file_picker-5.3.1" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_web-2.0.16" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/url_launcher_android-6.0.34" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/image_picker_android-0.8.6+16" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/path_provider_linux-2.1.10" />
+      <root url="file://$USER_HOME$/.pub-cache/hosted/pub.dev/file_picker-5.3.0" />
     </CLASSES>
     <JAVADOC />
     <SOURCES />
diff --git a/lib/view/pages/more/gradeAverages/gradeAverage.dart b/lib/view/pages/more/gradeAverages/gradeAverage.dart
index 765c3a6..08ffdbf 100644
--- a/lib/view/pages/more/gradeAverages/gradeAverage.dart
+++ b/lib/view/pages/more/gradeAverages/gradeAverage.dart
@@ -50,20 +50,23 @@ class _GradeAverageState extends State<GradeAverage> {
       appBar: AppBar(
         title: const Text("Notendurschnittsrechner"),
         actions: [
-          IconButton(onPressed: () {
-            showDialog(
-              context: context,
-              builder: (context) => ConfirmDialog(
-                title: "Zurücksetzen?",
-                content: "Alle Einträge werden entfernt.",
-                confirmButton: "Zurücksetzen",
-                onConfirm: () {
-                  grades.clear();
-                  setState(() {});
-                },
-              ),
-            );
-          }, icon: const Icon(Icons.delete_forever)),
+          Visibility(
+            visible: grades.isNotEmpty,
+            child: IconButton(onPressed: () {
+              showDialog(
+                context: context,
+                builder: (context) => ConfirmDialog(
+                  title: "Zurücksetzen?",
+                  content: "Alle Einträge werden entfernt.",
+                  confirmButton: "Zurücksetzen",
+                  onConfirm: () {
+                    grades.clear();
+                    setState(() {});
+                  },
+                ),
+              );
+            }, icon: const Icon(Icons.delete_forever)),
+          ),
           PopupMenuButton<bool>(
             enableFeedback: true,
             initialValue: gradeSystem,