diff --git a/dist/index.js b/dist/index.js
index 923d2616..30b82886 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -434,8 +434,12 @@
     close: "Close",
     discard: "Discard",
     rename: "Rename",
-    zoomOut: "zoom out",
-    zoomIn: "zoom in",
+    // settings
+    settings: "Settings",
+    showSettings: "Show settings",
+    zoomOut: "Zoom Out",
+    zoomIn: "Zoom In",
+    repairApp: "Repair App",
     // overview
     overview: "Overview",
     connection: "Connection",
@@ -526,8 +530,12 @@
       close: "Cerrar",
       discard: "Descartar",
       rename: "Renombrar",
-      zoomOut: "alejar",
-      zoomIn: "acercar",
+      // settings
+      settings: "Configuraci\xF3n",
+      showSettings: "Mostrar configuraci\xF3n",
+      zoomOut: "Alejar",
+      zoomIn: "Acercar",
+      repairApp: "Reparar Aplicaci\xF3n",
       // overview
       overview: "Resumen",
       connection: "Conexi\xF3n",
@@ -616,8 +624,12 @@
       close: "Schlie\xDFen",
       discard: "Verwerfen",
       rename: "Umbenennen",
-      zoomOut: "verkleinern",
-      zoomIn: "vergr\xF6\xDFern",
+      // settings
+      settings: "Einstellungen",
+      showSettings: "Einstellungen anzeigen",
+      zoomOut: "Verkleinern",
+      zoomIn: "Vergr\xF6\xDFern",
+      repairApp: "App reparieren",
       // overview
       overview: "\xDCbersicht",
       connection: "Verbindung",
@@ -937,8 +949,8 @@
     addObject = (messageObject) => {
       const existingObject = this.objects.value.get(messageObject.id);
       if (existingObject) {
+        let didChangeObject = existingObject.title != messageObject.title;
         existingObject.title = messageObject.title;
-        let didChangeObject = false;
         Object.values(messageObject.contentVersions).forEach((content) => {
           if (existingObject.contentVersions[content.id]) return;
           this.addObjectContent(existingObject, content);
@@ -1239,12 +1251,24 @@
     [outboxItemCount],
     () => outboxItemCount.value == 0 ? "success" : "warning"
   );
+  var isPresentingSettingsModal = new State(false);
   var isEncryptionAvailable = window.crypto.subtle != void 0;
   var senderName = restoreState("sender-name", "");
   var pageZoom = restoreState("page-zoom", 100);
   pageZoom.subscribe(() => {
     document.body.style.zoom = `${pageZoom.value}%`;
   });
+  function toggleSettings() {
+    isPresentingSettingsModal.value = !isPresentingSettingsModal.value;
+  }
+  function repairApp() {
+    removeSetDuplicates(previousAddresses);
+    removeSetDuplicates(usedObjectCategories);
+    removeSetDuplicates(usedObjectStatuses);
+  }
+  function removeSetDuplicates(listState) {
+    listState.value = /* @__PURE__ */ new Set([...listState.value]);
+  }
   var zoomStep = 10;
   function zoomOut() {
     pageZoom.value -= zoomStep;
@@ -2285,10 +2309,15 @@
 
   // src/Tabs/overviewTab.tsx
   function OverviewTab() {
-    return /* @__PURE__ */ createElement("article", { id: "settings-tab", "toggle:connected": isConnected }, /* @__PURE__ */ createElement("header", null, translation.overview, /* @__PURE__ */ createElement("span", null, /* @__PURE__ */ createElement("button", { "on:click": zoomOut, "aria-label": translation.zoomOut }, /* @__PURE__ */ createElement("span", { class: "icon" }, "zoom_out")), /* @__PURE__ */ createElement("button", { "on:click": zoomIn, "aria-label": translation.zoomIn }, /* @__PURE__ */ createElement("span", { class: "icon" }, "zoom_in")))), /* @__PURE__ */ createElement("div", { class: "flex-column large-gap" }, /* @__PURE__ */ createElement("div", { class: "tile error flex-no", "toggle:hidden": isEncryptionAvailable }, /* @__PURE__ */ createElement("span", { class: "icon" }, "warning"), /* @__PURE__ */ createElement("div", null, /* @__PURE__ */ createElement("b", null, translation.encryptionUnavailableTitle), /* @__PURE__ */ createElement("span", { class: "secondary" }, translation.encryptionUnavailableMessage))), PersonalSection(), ConnectionSection(), ChatListSection()));
+    return /* @__PURE__ */ createElement("article", { id: "settings-tab", "toggle:connected": isConnected }, /* @__PURE__ */ createElement("header", null, translation.overview, /* @__PURE__ */ createElement("button", { "aria-label": translation.showSettings, "on:click": toggleSettings }, /* @__PURE__ */ createElement("span", { class: "icon" }, "settings"))), /* @__PURE__ */ createElement("div", { class: "flex-column large-gap" }, /* @__PURE__ */ createElement("div", { class: "tile error flex-no", "toggle:hidden": isEncryptionAvailable }, /* @__PURE__ */ createElement("span", { class: "icon" }, "warning"), /* @__PURE__ */ createElement("div", null, /* @__PURE__ */ createElement("b", null, translation.encryptionUnavailableTitle), /* @__PURE__ */ createElement("span", { class: "secondary" }, translation.encryptionUnavailableMessage))), PersonalSection(), ConnectionSection(), ChatListSection()));
+  }
+
+  // src/Views/settingsModal.tsx
+  function SettingsModal() {
+    return /* @__PURE__ */ createElement("div", { class: "modal", "toggle:open": isPresentingSettingsModal }, /* @__PURE__ */ createElement("div", null, /* @__PURE__ */ createElement("main", null, /* @__PURE__ */ createElement("h2", null, translation.settings), /* @__PURE__ */ createElement("div", { class: "flex-row width-input gap" }, /* @__PURE__ */ createElement("button", { class: "width-100 flex justify-start", "on:click": zoomOut }, /* @__PURE__ */ createElement("span", { class: "icon" }, "zoom_out"), translation.zoomOut), /* @__PURE__ */ createElement("button", { class: "width-100 flex justify-start", "on:click": zoomIn }, /* @__PURE__ */ createElement("span", { class: "icon" }, "zoom_in"), translation.zoomIn)), /* @__PURE__ */ createElement("hr", null), /* @__PURE__ */ createElement("div", { class: "flex-row width-input" }, /* @__PURE__ */ createElement("button", { class: "width-100 flex-1", "on:click": repairApp }, translation.repairApp, /* @__PURE__ */ createElement("span", { class: "icon" }, "handyman")))), /* @__PURE__ */ createElement("button", { class: "width-100", "on:click": toggleSettings }, translation.close, /* @__PURE__ */ createElement("span", { class: "icon" }, "close"))));
   }
 
   // src/index.tsx
-  document.querySelector("main").append(OverviewTab(), MessageTab());
+  document.querySelector("main").append(OverviewTab(), MessageTab(), SettingsModal());
   document.querySelector("main").classList.add("split");
 })();
diff --git a/src/Model/model.ts b/src/Model/model.ts
index 76090321..06a12f46 100644
--- a/src/Model/model.ts
+++ b/src/Model/model.ts
@@ -145,6 +145,7 @@ export const outboxTextStyle = React.createProxyState([outboxItemCount], () =>
 );
 
 // MISC
+export const isPresentingSettingsModal = new React.State(false);
 export const isEncryptionAvailable = window.crypto.subtle != undefined;
 export const senderName = React.restoreState("sender-name", "");
 export const pageZoom = React.restoreState("page-zoom", 100);
@@ -152,6 +153,20 @@ pageZoom.subscribe(() => {
   document.body.style.zoom = `${pageZoom.value}%`;
 });
 
+export function toggleSettings() {
+  isPresentingSettingsModal.value = !isPresentingSettingsModal.value;
+}
+
+export function repairApp() {
+  removeSetDuplicates(previousAddresses);
+  removeSetDuplicates(usedObjectCategories);
+  removeSetDuplicates(usedObjectStatuses);
+}
+
+function removeSetDuplicates(listState: React.ListState<any>) {
+  listState.value = new Set([...listState.value]);
+}
+
 const zoomStep = 10;
 export function zoomOut() {
   pageZoom.value -= zoomStep;
diff --git a/src/Tabs/overviewTab.tsx b/src/Tabs/overviewTab.tsx
index ed615428..983103b4 100644
--- a/src/Tabs/overviewTab.tsx
+++ b/src/Tabs/overviewTab.tsx
@@ -1,6 +1,6 @@
 import * as React from "bloatless-react";
 
-import { isConnected, isEncryptionAvailable, zoomIn, zoomOut } from "../Model/model";
+import { isConnected, isEncryptionAvailable, toggleSettings, zoomIn, zoomOut } from "../Model/model";
 
 import { ChatListSection } from "../Views/Overview/chatListSection";
 import { ConnectionSection } from "../Views/Overview/connectionSection";
@@ -12,14 +12,9 @@ export function OverviewTab() {
     <article id="settings-tab" toggle:connected={isConnected}>
       <header>
         {translation.overview}
-        <span>
-          <button on:click={zoomOut} aria-label={translation.zoomOut}>
-            <span class="icon">zoom_out</span>
-          </button>
-          <button on:click={zoomIn} aria-label={translation.zoomIn}>
-            <span class="icon">zoom_in</span>
-          </button>
-        </span>
+        <button aria-label={translation.showSettings} on:click={toggleSettings}>
+          <span class="icon">settings</span>
+        </button>
       </header>
 
       <div class="flex-column large-gap">
diff --git a/src/Views/settingsModal.tsx b/src/Views/settingsModal.tsx
new file mode 100644
index 00000000..ac01c142
--- /dev/null
+++ b/src/Views/settingsModal.tsx
@@ -0,0 +1,47 @@
+import * as React from "bloatless-react";
+
+import {
+  isPresentingSettingsModal,
+  repairApp,
+  toggleSettings,
+  zoomIn,
+  zoomOut,
+} from "../Model/model";
+
+import { translation } from "../translations";
+
+export function SettingsModal() {
+  return (
+    <div class="modal" toggle:open={isPresentingSettingsModal}>
+      <div>
+        <main>
+          <h2>{translation.settings}</h2>
+
+          <div class="flex-row width-input gap">
+            <button class="width-100 flex justify-start" on:click={zoomOut}>
+              <span class="icon">zoom_out</span>
+              {translation.zoomOut}
+            </button>
+            <button class="width-100 flex justify-start" on:click={zoomIn}>
+              <span class="icon">zoom_in</span>
+              {translation.zoomIn}
+            </button>
+          </div>
+
+          <hr></hr>
+
+          <div class="flex-row width-input">
+            <button class="width-100 flex-1" on:click={repairApp}>
+              {translation.repairApp}
+              <span class="icon">handyman</span>
+            </button>
+          </div>
+        </main>
+        <button class="width-100" on:click={toggleSettings}>
+          {translation.close}
+          <span class="icon">close</span>
+        </button>
+      </div>
+    </div>
+  );
+}
diff --git a/src/index.tsx b/src/index.tsx
index 47dc3e73..e7f30c4f 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -2,6 +2,9 @@ import "./styles.css";
 
 import { MessageTab } from "./Tabs/messageTab";
 import { OverviewTab } from "./Tabs/overviewTab";
+import { SettingsModal } from "./Views/settingsModal";
 
-document.querySelector("main")!.append(OverviewTab(), MessageTab());
-document.querySelector("main")!.classList.add("split");
\ No newline at end of file
+document
+  .querySelector("main")!
+  .append(OverviewTab(), MessageTab(), SettingsModal());
+document.querySelector("main")!.classList.add("split");
diff --git a/src/translations.ts b/src/translations.ts
index 1a959d04..7fa51cd6 100644
--- a/src/translations.ts
+++ b/src/translations.ts
@@ -8,8 +8,14 @@ const englishTranslations = {
   discard: "Discard",
   rename: "Rename",
 
-  zoomOut: "zoom out",
-  zoomIn: "zoom in",
+  // settings
+  settings: "Settings",
+  showSettings: "Show settings",
+
+  zoomOut: "Zoom Out",
+  zoomIn: "Zoom In",
+
+  repairApp: "Repair App",
 
   // overview
   overview: "Overview",
@@ -128,8 +134,14 @@ const allTranslations: { [key: string]: typeof englishTranslations } = {
     discard: "Descartar",
     rename: "Renombrar",
 
-    zoomOut: "alejar",
-    zoomIn: "acercar",
+    // settings
+    settings: "Configuración",
+    showSettings: "Mostrar configuración",
+
+    zoomOut: "Alejar",
+    zoomIn: "Acercar",
+
+    repairApp: "Reparar Aplicación",
 
     // overview
     overview: "Resumen",
@@ -245,8 +257,14 @@ const allTranslations: { [key: string]: typeof englishTranslations } = {
     discard: "Verwerfen",
     rename: "Umbenennen",
 
-    zoomOut: "verkleinern",
-    zoomIn: "vergrößern",
+    // settings
+    settings: "Einstellungen",
+    showSettings: "Einstellungen anzeigen",
+
+    zoomOut: "Verkleinern",
+    zoomIn: "Vergrößern",
+
+    repairApp: "App reparieren",
 
     // overview
     overview: "Übersicht",