diff --git a/README.md b/README.md
index b1686e0..03a77a1 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,14 @@ Users can disable the menu using the page of personal settings.
 
 Use the shortcut `Ctrl`+`o` to open and to hide the side menu. Use `tab` to navigate.
 
+### Use first top menu app as default app
+
+You can easily let Nextcloud redirect to the first top menu app by changing the following parameter in your `config/config.php`:
+
+```
+'defaultapp' => 'side_menu',
+```
+
 How to contribute?
 ------------------
 
diff --git a/appinfo/routes.php b/appinfo/routes.php
index 1efd4b6..bdc3fba 100644
--- a/appinfo/routes.php
+++ b/appinfo/routes.php
@@ -19,6 +19,7 @@
 
 return [
     'routes' => [
+        ['name' => 'App#index', 'url' => '/', 'verb' => 'GET'],
         ['name' => 'Css#stylesheet', 'url' => '/css/stylesheet', 'verb' => 'GET'],
         ['name' => 'Js#script', 'url' => '/js/script', 'verb' => 'GET'],
         ['name' => 'Js#config', 'url' => '/js/config', 'verb' => 'GET'],
diff --git a/lib/Controller/AppController.php b/lib/Controller/AppController.php
new file mode 100644
index 0000000..1d3de92
--- /dev/null
+++ b/lib/Controller/AppController.php
@@ -0,0 +1,102 @@
+<?php
+/**
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace OCA\SideMenu\Controller;
+
+use OC;
+use OCA\SideMenu\Service\AppRepository;
+use OCA\SideMenu\Service\ConfigProxy;
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http\RedirectResponse;
+use OCP\IRequest;
+use OCP\IURLGenerator;
+use OCP\IUserSession;
+
+class AppController extends Controller
+{
+    /**
+     * @var ConfigProxy
+     */
+    protected $config;
+
+    /**
+     * @var AppRepository
+     */
+    protected $appRepository;
+
+    public function __construct(
+        string $appName,
+        IRequest $request,
+        AppRepository $appRepository,
+        IURLGenerator $urlGenerator,
+        ConfigProxy $config
+    ) {
+        parent::__construct($appName, $request);
+
+        $this->appRepository = $appRepository;
+        $this->urlGenerator = $urlGenerator;
+        $this->config = $config;
+    }
+
+    /**
+     * @NoAdminRequired
+     * @NoCSRFRequired
+     */
+    public function index(): RedirectResponse
+    {
+        $user = OC::$server[IUserSession::class]->getUser();
+        $topMenuApps = $this->config->getAppValueArray('top-menu-apps', '[]');
+        $hiddenApps = $this->config->getAppValueArray('big-menu-hidden-apps', '[]');
+        $isForced = $this->config->getAppValueBool('force', '0');
+        $userTopMenuApps = $this->config->getUserValueArray($user, 'top-menu-apps', '[]');
+        $apps = $this->appRepository->getOrderedApps($user);
+
+        if (!$isForced && !empty($userTopMenuApps)) {
+            $topMenuApps = $userTopMenuApps;
+        }
+
+        foreach ($apps as $app) {
+            $inTopMenuApps = in_array($app['id'], $topMenuApps);
+            $inHiddenApps = in_array($app['id'], $hiddenApps);
+
+            if (!$inTopMenuApps || $inHiddenApps) {
+                continue;
+            }
+
+            return $this->redirectToApp($app['id']);
+        }
+
+        return $this->redirectToApp('files');
+    }
+
+    protected function redirectToApp($appId): RedirectResponse
+    {
+        $isIgnoreFrontController = true === OC::$server->getConfig()->getSystemValue('htaccess.IgnoreFrontController', false);
+        $isFrontControllerActive = 'true' === getenv('front_controller_active');
+
+        if ($isIgnoreFrontController || $isFrontControllerActive) {
+            $path = '/apps/%s/';
+        } else {
+            $path = '/index.php/apps/%s/';
+        }
+
+        $url = $this->urlGenerator->getAbsoluteURL(sprintf($path, $appId));
+
+        return new RedirectResponse($url);
+    }
+}