diff --git a/README.md b/README.md
index 861fb84..65fea4c 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ Das Projekt ist bewusst schlank gehalten: React Native, Expo, TypeScript und Rea
 - HomeScreen mit Fortschrittskarte und Mock Daily Reminder
 - Level-Auswahl fuer A1, A2, B1 und B2
 - ChatScreen mit einfacher User- und AI-Nachrichtenansicht
+- AI-Antworten koennen auf dem iPhone vorgelesen werden
 - Mock KI-Service fuer Beispielkorrekturen
 - TypeScript-typisierte Navigation
 - Struktur fuer spaetere Services, Hooks und Utilities
@@ -32,6 +33,8 @@ Good try. Correct: "I went to work yesterday."
 - React Navigation
 - Geplant: Ollama API fuer lokale KI
 - Geplant: Speech-to-Text und Text-to-Speech
+- Text-to-Speech mit `expo-speech`
+- Spracheingabe aktuell ueber iPhone-Diktierfunktion in der Tastatur
 - Geplant: Push Notifications fuer Daily Reminder
 
 ## Projektstruktur
@@ -104,6 +107,19 @@ App starten:
 npm run start
 ```
 
+## Spracheingabe und Vorlesen
+
+Vorlesen funktioniert direkt in Expo Go. AI-Antworten werden automatisch ueber den iPhone-Lautsprecher vorgelesen. Im Chat gibt es ausserdem Buttons fuer `Letzte Antwort vorlesen` und `Stop`.
+
+Spracheingabe funktioniert aktuell ueber die iPhone-Tastatur:
+
+- Chat-Eingabefeld antippen
+- Mikrofon-Symbol auf der iPhone-Tastatur druecken
+- Englisch sprechen
+- Text pruefen und senden
+
+Echtes In-App Speech-to-Text mit eigenem Mikrofon-Button ist fuer spaeter geplant. Dafuer braucht die App entweder ein natives iOS-Modul nach `expo prebuild` oder eine Transkriptions-API wie Whisper.
+
 iOS Preview starten:
 
 ```bash
diff --git a/package-lock.json b/package-lock.json
index d465b2d..a380122 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,6 +11,7 @@
         "@react-navigation/native": "^7.2.2",
         "@react-navigation/native-stack": "^7.14.12",
         "expo": "~54.0.33",
+        "expo-speech": "~14.0.8",
         "expo-status-bar": "~3.0.9",
         "react": "19.1.0",
         "react-native": "0.81.5",
@@ -4620,6 +4621,15 @@
         "node": ">=20.16.0"
       }
     },
+    "node_modules/expo-speech": {
+      "version": "14.0.8",
+      "resolved": "https://registry.npmjs.org/expo-speech/-/expo-speech-14.0.8.tgz",
+      "integrity": "sha512-UjBFCFv58nutlLw92L7kUS0ZjbOOfaTdiEv/HbjvMrT6BfldoOLLBZbaEcEhDdZK36NY/kass0Kzxk+co6vxSQ==",
+      "license": "MIT",
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
     "node_modules/expo-status-bar": {
       "version": "3.0.9",
       "resolved": "https://registry.npmjs.org/expo-status-bar/-/expo-status-bar-3.0.9.tgz",
diff --git a/package.json b/package.json
index 8c3e1b6..0388076 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
     "@react-navigation/native": "^7.2.2",
     "@react-navigation/native-stack": "^7.14.12",
     "expo": "~54.0.33",
+    "expo-speech": "~14.0.8",
     "expo-status-bar": "~3.0.9",
     "react": "19.1.0",
     "react-native": "0.81.5",
diff --git a/src/screens/ChatScreen.tsx b/src/screens/ChatScreen.tsx
index 0584ad4..994319d 100644
--- a/src/screens/ChatScreen.tsx
+++ b/src/screens/ChatScreen.tsx
@@ -7,6 +7,7 @@ import { ChatBubble, type ChatMessage } from '../components/ChatBubble';
 import { PrimaryButton } from '../components/PrimaryButton';
 import type { RootStackParamList } from '../navigation/types';
 import { getMockAiReply } from '../services/mockAiCoach';
+import { speakText, stopSpeaking } from '../services/speechService';
 import { colors } from '../theme/colors';
 
 type ChatScreenProps = NativeStackScreenProps<RootStackParamList, 'Chat'>;
@@ -36,6 +37,7 @@ export function ChatScreen({ route }: ChatScreenProps) {
     // This mock can later be replaced by Ollama or another AI API client.
     const reply = await getMockAiReply(userMessage.text, level);
     setMessages((current) => [...current, { id: `ai-${Date.now()}`, role: 'assistant', text: reply }]);
+    speakText(reply);
     setIsSending(false);
   }
 
@@ -62,7 +64,24 @@ export function ChatScreen({ route }: ChatScreenProps) {
             style={styles.input}
             value={input}
           />
-          <PrimaryButton label={isSending ? 'Denke...' : 'Senden'} onPress={sendMessage} />
+          <View style={styles.actionRow}>
+            <View style={styles.actionItem}>
+              <PrimaryButton label={isSending ? 'Denke...' : 'Senden'} onPress={sendMessage} />
+            </View>
+            <View style={styles.actionItem}>
+              <PrimaryButton label="Stop" variant="secondary" onPress={stopSpeaking} />
+            </View>
+          </View>
+          <PrimaryButton
+            label="Letzte Antwort vorlesen"
+            variant="secondary"
+            onPress={() => {
+              const lastAiMessage = [...messages].reverse().find((message) => message.role === 'assistant');
+              if (lastAiMessage) {
+                speakText(lastAiMessage.text);
+              }
+            }}
+          />
         </View>
       </KeyboardAvoidingView>
     </SafeAreaView>
@@ -86,6 +105,13 @@ const styles = StyleSheet.create({
     gap: 12,
     padding: 14,
   },
+  actionRow: {
+    flexDirection: 'row',
+    gap: 10,
+  },
+  actionItem: {
+    flex: 1,
+  },
   input: {
     backgroundColor: colors.surfaceRaised,
     borderColor: colors.border,
diff --git a/src/services/speechService.ts b/src/services/speechService.ts
new file mode 100644
index 0000000..09e3a8a
--- /dev/null
+++ b/src/services/speechService.ts
@@ -0,0 +1,18 @@
+import * as Speech from 'expo-speech';
+
+export function speakText(text: string) {
+  Speech.stop();
+  Speech.speak(stripThinkingBlocks(text), {
+    language: 'en-US',
+    pitch: 1,
+    rate: 0.9,
+  });
+}
+
+export function stopSpeaking() {
+  Speech.stop();
+}
+
+function stripThinkingBlocks(text: string) {
+  return text.replace(/<think>[\s\S]*?<\/think>/gi, '').trim();
+}