diff --git a/lib/pages/about_page.dart b/lib/pages/about_page.dart
index cf0f9eb..2e56626 100644
--- a/lib/pages/about_page.dart
+++ b/lib/pages/about_page.dart
@@ -1,11 +1,27 @@
 import 'package:flutter/material.dart';
 import 'package:oweapp4/widgets/drawer.dart';
+import 'package:package_info/package_info.dart';
 
-class AboutPage extends StatelessWidget {
+class AboutPage extends StatefulWidget {
   static const String routeName = '/about';
 
+  @override
+  _AboutPageState createState() => _AboutPageState();
+}
+
+class _AboutPageState extends State<AboutPage> {
+  String versionName = '';
+
+  _getBuildNumber() async {
+    PackageInfo packageInfo = await PackageInfo.fromPlatform();
+    setState(()  {
+      versionName = packageInfo.version;
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
+    _getBuildNumber();
     TextStyle textStyle = TextStyle(
       color: Theme.of(context).accentColor,
       fontWeight: FontWeight.w300,
@@ -28,7 +44,7 @@ class AboutPage extends StatelessWidget {
                 height: 5,
               ),
               Text(
-                "Leihen v5",
+                "Leihen v" + this.versionName,
                 style: textStyle,
               ),
               Text("www.leihen.app", style: textStyle),
diff --git a/lib/pages/changelog_screen.dart b/lib/pages/changelog_screen.dart
new file mode 100644
index 0000000..9029f28
--- /dev/null
+++ b/lib/pages/changelog_screen.dart
@@ -0,0 +1,18 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_webview_plugin/flutter_webview_plugin.dart';
+import 'package:oweapp4/widgets/drawer.dart';
+
+class ChangelogScreen extends StatelessWidget {
+  static const String routeName = '/changelog';
+
+  @override
+  Widget build(BuildContext context) {
+    return WebviewScaffold(
+      url: "https://leihen.app/changelog.html",
+      clearCache: true,
+      appBar: new AppBar(
+        title: new Text("Was gibt's neues?"),
+      ),
+    );
+  }
+}
diff --git a/lib/pages/homescreen_page.dart b/lib/pages/homescreen_page.dart
index bb6d8bf..4dfad28 100644
--- a/lib/pages/homescreen_page.dart
+++ b/lib/pages/homescreen_page.dart
@@ -1,12 +1,15 @@
 import 'package:flutter/material.dart';
 import 'package:oweapp4/Database.dart';
+import 'package:oweapp4/pages/changelog_screen.dart';
 import 'package:oweapp4/pages/input_item_screen.dart';
 import 'package:oweapp4/NI_SelectContactScreen.dart';
 import 'package:oweapp4/pages/about_page.dart';
 import 'package:oweapp4/widgets/drawer.dart';
 import 'package:oweapp4/widgets/main_card.dart';
+import 'package:package_info/package_info.dart';
 import 'package:permission_handler/permission_handler.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:flutter_webview_plugin/flutter_webview_plugin.dart';
 
 class HomeScreen extends StatefulWidget {
   @override
@@ -34,6 +37,24 @@ class HomeScreenState extends State<HomeScreen> {
     print("Call initState()");
     _getHomeScreenData();
     super.initState();
+
+    WidgetsBinding.instance.addPostFrameCallback((_) => __showChangelogIfNeccesary());
+  }
+
+  __showChangelogIfNeccesary() async {
+
+    PackageInfo packageInfo = await PackageInfo.fromPlatform();
+    print(packageInfo.buildNumber);
+    print(this._lastVersionNumber);
+    print((this._lastVersionNumber.compareTo(packageInfo.buildNumber).isEven));
+
+    if (this._lastVersionNumber == null || (this._lastVersionNumber != null && (this._lastVersionNumber.compareTo(packageInfo.buildNumber).isEven) == false)) {
+      final prefs = await SharedPreferences.getInstance();
+      prefs.setString('lastVersionNumber', packageInfo.buildNumber);
+      Navigator.push(context,
+          MaterialPageRoute(builder: (BuildContext context) => ChangelogScreen()));
+    }
+
   }
 
   _checkContactPermission() async {
@@ -70,7 +91,6 @@ class HomeScreenState extends State<HomeScreen> {
         firstStart = true;
       });
     }
-
   }
 
   _showFirstStartScreen() {
@@ -85,22 +105,22 @@ class HomeScreenState extends State<HomeScreen> {
             mainAxisAlignment: MainAxisAlignment.center,
             crossAxisAlignment: CrossAxisAlignment.center,
             children: <Widget>[
-              Icon(
-                Icons.info,
-                size: 25,
-              ),
-              Container(
-                height: 5,
-              ),
-              Text(
-                "Diese App braucht die Berechtigung zum Lesen deiner Kontakte.",
-                style: textStyle,
-              ),
-              Container(height: 50),
-
-              Icon(Icons.favorite, color: Colors.redAccent),
-              Text("Deine Daten bleiben auf deinem Gerät, versprochen!", style: textStyle)
-            ]));
+          Icon(
+            Icons.info,
+            size: 25,
+          ),
+          Container(
+            height: 5,
+          ),
+          Text(
+            "Diese App braucht die Berechtigung zum Lesen deiner Kontakte.",
+            style: textStyle,
+          ),
+          Container(height: 50),
+          Icon(Icons.favorite, color: Colors.redAccent),
+          Text("Deine Daten bleiben auf deinem Gerät, versprochen!",
+              style: textStyle)
+        ]));
   }
 
   @override
@@ -155,7 +175,8 @@ class HomeScreenState extends State<HomeScreen> {
           onPressed: () => Navigator.push(
               context,
               MaterialPageRoute(
-                  builder: (BuildContext context) => NewItemSelectContactScreen()))),
+                  builder: (BuildContext context) =>
+                      NewItemSelectContactScreen()))),
     );
   }
 }
diff --git a/lib/pages/show_items_to_contact_screen.dart b/lib/pages/show_items_to_contact_screen.dart
index 597a449..47a8d17 100644
--- a/lib/pages/show_items_to_contact_screen.dart
+++ b/lib/pages/show_items_to_contact_screen.dart
@@ -104,8 +104,15 @@ class ShowItemsToContactScreenState extends State<ShowItemsToContactScreen> {
   }
 
   @override
-  Widget build(BuildContext context) {
+  void initState() {
+    super.initState();
     _loadContact();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    print("Run build");
+
 
     return Scaffold(
         appBar: AppBar(
diff --git a/lib/widgets/drawer.dart b/lib/widgets/drawer.dart
index 4e14295..30aeb00 100644
--- a/lib/widgets/drawer.dart
+++ b/lib/widgets/drawer.dart
@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:oweapp4/main.dart';
 import 'package:oweapp4/pages/about_page.dart';
+import 'package:oweapp4/pages/changelog_screen.dart';
 import 'package:oweapp4/routes/Routes.dart';
 import 'package:url_launcher/url_launcher.dart';
 import 'package:package_info/package_info.dart';
@@ -45,6 +46,13 @@ class _AppDrawerState extends State<AppDrawer> {
                   MaterialPageRoute(
                       builder: (BuildContext context) => AboutPage()))),
           Divider(),
+          _createDrawerItem(
+              icon: Icons.fiber_new_outlined,
+              text: 'Changelog',
+              onTap: () => Navigator.push(
+                  context,
+                  MaterialPageRoute(
+                      builder: (BuildContext context) => ChangelogScreen()))),
           _createDrawerItem(
               icon: Icons.bug_report,
               text: 'Fehler melden',
diff --git a/pubspec.lock b/pubspec.lock
index 85911fe..85906da 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -135,6 +135,13 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_webview_plugin:
+    dependency: "direct main"
+    description:
+      name: flutter_webview_plugin
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.11"
   http:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index a9a505f..7b6e96a 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -11,7 +11,7 @@ description: Leihen
 # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-version: 5.0.3+503
+version: 5.1.0+510
 
 environment:
   sdk: ">=2.1.0 <3.0.0"
@@ -33,6 +33,7 @@ dependencies:
   flutter_launcher_icons: ^0.7.4
   package_info: ^0.4.1
   shared_preferences:
+  flutter_webview_plugin: ^0.3.11
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.