diff --git a/packages/app-expo/src/lib/platform/mobile-cache.ts b/packages/app-expo/src/lib/platform/mobile-cache.ts
new file mode 100644
index 00000000..15122ad7
--- /dev/null
+++ b/packages/app-expo/src/lib/platform/mobile-cache.ts
@@ -0,0 +1,68 @@
+import { Directory, File, Paths } from "expo-file-system";
+
+export interface ClearMobileCacheResult {
+  deletedFiles: number;
+  deletedBytes: number;
+}
+
+function getFileSize(file: File): number {
+  try {
+    return file.info().size ?? 0;
+  } catch {
+    return 0;
+  }
+}
+
+function deleteEntry(entry: File | Directory): ClearMobileCacheResult {
+  if (entry instanceof File) {
+    const deletedBytes = getFileSize(entry);
+    entry.delete();
+    return { deletedFiles: 1, deletedBytes };
+  }
+
+  let result: ClearMobileCacheResult = { deletedFiles: 0, deletedBytes: 0 };
+  try {
+    for (const child of entry.list()) {
+      const childResult = deleteEntry(child);
+      result = {
+        deletedFiles: result.deletedFiles + childResult.deletedFiles,
+        deletedBytes: result.deletedBytes + childResult.deletedBytes,
+      };
+    }
+  } catch {
+    // Still try deleting the directory itself below.
+  }
+  entry.delete();
+  return result;
+}
+
+export async function clearMobileRuntimeCache(): Promise<ClearMobileCacheResult> {
+  const cacheDir = new Directory(Paths.cache);
+  if (!cacheDir.exists) {
+    cacheDir.create({ idempotent: true, intermediates: true });
+    return { deletedFiles: 0, deletedBytes: 0 };
+  }
+
+  let result: ClearMobileCacheResult = { deletedFiles: 0, deletedBytes: 0 };
+  for (const entry of cacheDir.list()) {
+    try {
+      const entryResult = deleteEntry(entry);
+      result = {
+        deletedFiles: result.deletedFiles + entryResult.deletedFiles,
+        deletedBytes: result.deletedBytes + entryResult.deletedBytes,
+      };
+    } catch (error) {
+      console.warn("[mobile-cache] Failed to delete cache entry:", entry.uri, error);
+    }
+  }
+
+  cacheDir.create({ idempotent: true, intermediates: true });
+  return result;
+}
+
+export function formatCacheSize(bytes: number): string {
+  if (bytes < 1024) return `${bytes} B`;
+  if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
+  if (bytes < 1024 * 1024 * 1024) return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
+  return `${(bytes / (1024 * 1024 * 1024)).toFixed(1)} GB`;
+}
diff --git a/packages/app-expo/src/screens/ProfileScreen.tsx b/packages/app-expo/src/screens/ProfileScreen.tsx
index 41eedc87..bc19ebce 100644
--- a/packages/app-expo/src/screens/ProfileScreen.tsx
+++ b/packages/app-expo/src/screens/ProfileScreen.tsx
@@ -13,22 +13,21 @@ import {
   MessageSquareIcon,
   PaletteIcon,
   PuzzleIcon,
+  Trash2Icon,
   TypeIcon,
   Volume2Icon,
 } from "@/components/ui/Icon";
 import { SyncButton } from "@/components/ui/SyncButton";
 import { useResponsiveLayout } from "@/hooks/use-responsive-layout";
+import { clearMobileRuntimeCache, formatCacheSize } from "@/lib/platform/mobile-cache";
+import { stopTTSPreview } from "@/lib/platform/tts-preview";
 import {
   mergeCurrentSessionIntoDailyStats,
   mergeCurrentSessionIntoOverallStats,
 } from "@/lib/stats/live-reading-stats";
 import type { RootStackParamList } from "@/navigation/RootNavigator";
-import {
-  formatCharacterCount,
-  formatCharactersPerMinute,
-  formatTimeLocalized,
-} from "@/screens/stats/stats-utils";
-import { useReadingSessionStore } from "@/stores";
+import { formatCharacterCount, formatTimeLocalized } from "@/screens/stats/stats-utils";
+import { useReadingSessionStore, useTTSStore } from "@/stores";
 import {
   type ThemeColors,
   fontSize,
@@ -53,6 +52,7 @@ import { useCallback, useEffect, useMemo, useState } from "react";
 import { useTranslation } from "react-i18next";
 import {
   ActivityIndicator,
+  Alert,
   Linking,
   ScrollView,
   type StyleProp,
@@ -65,6 +65,42 @@ import {
 import { SafeAreaView } from "react-native-safe-area-context";
 
 type Nav = NativeStackNavigationProp<RootStackParamList>;
+type ProfileMenuIcon = (props: {
+  size?: number;
+  color?: string;
+  strokeWidth?: number;
+}) => React.ReactNode;
+type ProfileMenuRoute = Extract<
+  keyof RootStackParamList,
+  | "AppearanceSettings"
+  | "FontSettings"
+  | "SyncSettings"
+  | "AISettings"
+  | "TTSSettings"
+  | "TranslationSettings"
+  | "Skills"
+  | "VectorModelSettings"
+  | "Feedback"
+  | "About"
+>;
+type ProfileMenuItem =
+  | {
+      icon: ProfileMenuIcon;
+      label: string;
+      route: ProfileMenuRoute;
+      showDot?: boolean;
+    }
+  | {
+      icon: ProfileMenuIcon;
+      label: string;
+      url: string;
+    }
+  | {
+      icon: ProfileMenuIcon;
+      label: string;
+      action: () => void;
+      disabled?: boolean;
+    };
 
 const ICP_NUMBER = "粤ICP备2025444251号-2A";
 const ICP_URL = "https://beian.miit.gov.cn/";
@@ -289,8 +325,10 @@ export function ProfileScreen() {
   const [dailyStats, setDailyStats] = useState<DailyStats[]>([]);
   const [statsLoading, setStatsLoading] = useState(true);
   const [unreadFeedback, setUnreadFeedback] = useState(0);
+  const [clearingCache, setClearingCache] = useState(false);
   const saveCurrentSession = useReadingSessionStore((s) => s.saveCurrentSession);
   const currentSession = useReadingSessionStore((s) => s.currentSession);
+  const stopTTS = useTTSStore((s) => s.stop);
 
   const loadStats = useCallback(async () => {
     try {
@@ -338,9 +376,50 @@ export function ProfileScreen() {
     [overall, dailyStats, currentSession],
   );
   const isZh = i18n.language.startsWith("zh");
+  const handleClearCache = useCallback(() => {
+    Alert.alert(
+      t("profile.clearCacheTitle", "清除缓存"),
+      t(
+        "profile.clearCacheConfirm",
+        "将清除临时导入文件、TTS 音频缓存和其他运行缓存。书籍、笔记、设置和同步数据不会被删除。",
+      ),
+      [
+        { text: t("common.cancel", "取消"), style: "cancel" },
+        {
+          text: t("profile.clearCacheAction", "清除缓存"),
+          style: "destructive",
+          onPress: async () => {
+            setClearingCache(true);
+            try {
+              stopTTS();
+              stopTTSPreview();
+              const result = await clearMobileRuntimeCache();
+              Alert.alert(
+                t("profile.clearCacheDoneTitle", "缓存已清除"),
+                t("profile.clearCacheDoneDesc", {
+                  count: result.deletedFiles,
+                  size: formatCacheSize(result.deletedBytes),
+                }),
+              );
+            } catch (error) {
+              console.error("[ProfileScreen] Failed to clear cache:", error);
+              Alert.alert(
+                t("profile.clearCacheFailedTitle", "清除失败"),
+                error instanceof Error
+                  ? error.message
+                  : t("profile.clearCacheFailedDesc", "请稍后重试。"),
+              );
+            } finally {
+              setClearingCache(false);
+            }
+          },
+        },
+      ],
+    );
+  }, [stopTTS, t]);
 
   // Settings menu — matching Tauri ProfilePage exactly
-  const menuSections = useMemo(
+  const menuSections = useMemo<{ title: string; items: ProfileMenuItem[] }[]>(
     () => [
       {
         title: t("settings.general", "通用"),
@@ -358,6 +437,19 @@ export function ProfileScreen() {
           { icon: CloudIcon, label: t("settings.sync", "同步"), route: "SyncSettings" as const },
         ],
       },
+      {
+        title: t("profile.storage", "存储"),
+        items: [
+          {
+            icon: Trash2Icon,
+            label: clearingCache
+              ? t("profile.clearingCache", "清除中...")
+              : t("profile.clearCache", "清除缓存"),
+            action: handleClearCache,
+            disabled: clearingCache,
+          },
+        ],
+      },
       {
         title: t("settings.skills", "能力"),
         items: [
@@ -398,7 +490,7 @@ export function ProfileScreen() {
         ],
       },
     ],
-    [t, i18n.language, unreadFeedback],
+    [t, i18n.language, unreadFeedback, clearingCache, handleClearCache],
   );
 
   const booksRead = liveOverall?.totalBooks ?? 0;
@@ -409,12 +501,6 @@ export function ProfileScreen() {
     ? formatCharacterCount(liveOverall.totalCharactersRead ?? 0, isZh)
     : formatCharacterCount(0, isZh);
   const streak = liveOverall?.currentStreak ?? 0;
-  const activeDays = liveOverall?.totalReadingDays ?? 0;
-  const totalSessions = liveOverall?.totalSessions ?? 0;
-  const avgSpeed = liveOverall
-    ? formatCharactersPerMinute(liveOverall.avgCharactersPerMinute ?? 0, isZh)
-    : formatCharactersPerMinute(0, isZh);
-  const longestStreak = liveOverall?.longestStreak ?? 0;
   const overviewCards = [
     {
       key: "time",
@@ -516,12 +602,18 @@ export function ProfileScreen() {
             <View style={s.menuCard}>
               {section.items.map((item, idx) => {
                 const Icon = item.icon;
-                const itemKey = "route" in item ? item.route : item.url;
+                const itemKey =
+                  "route" in item ? item.route : "url" in item ? item.url : item.label;
                 const handlePress = () => {
-                  if ("url" in item && item.url) {
+                  if ("disabled" in item && item.disabled) {
+                    return;
+                  }
+                  if ("action" in item && item.action) {
+                    item.action();
+                  } else if ("url" in item && item.url) {
                     Linking.openURL(item.url);
                   } else if ("route" in item) {
-                    nav.navigate(item.route as any);
+                    nav.navigate(item.route);
                   }
                 };
                 return (
@@ -529,6 +621,7 @@ export function ProfileScreen() {
                     key={itemKey}
                     style={[s.menuItem, idx < section.items.length - 1 && s.menuItemBorder]}
                     onPress={handlePress}
+                    disabled={"disabled" in item && item.disabled}
                     activeOpacity={0.7}
                   >
                     <Icon size={20} color={colors.mutedForeground} />
diff --git a/packages/core/src/i18n/locales/en/profile.json b/packages/core/src/i18n/locales/en/profile.json
index ec8eb32e..b6870cbf 100644
--- a/packages/core/src/i18n/locales/en/profile.json
+++ b/packages/core/src/i18n/locales/en/profile.json
@@ -14,7 +14,17 @@
     "avgDaily": "Daily Avg",
     "readingActivity": "Reading Activity",
     "viewDetails": "View Details",
-    "version": "ReadAny Mobile v{{version}}"
+    "version": "ReadAny Mobile v{{version}}",
+    "storage": "Storage",
+    "clearCache": "Clear Cache",
+    "clearingCache": "Clearing...",
+    "clearCacheTitle": "Clear Cache",
+    "clearCacheConfirm": "This will remove temporary import files, TTS audio cache, and other runtime cache. Books, notes, settings, and sync data will not be deleted.",
+    "clearCacheAction": "Clear Cache",
+    "clearCacheDoneTitle": "Cache Cleared",
+    "clearCacheDoneDesc": "Removed {{count}} cached file(s), freeing {{size}}.",
+    "clearCacheFailedTitle": "Failed to Clear Cache",
+    "clearCacheFailedDesc": "Please try again later."
   },
   "skills": {
     "title": "Skills",
diff --git a/packages/core/src/i18n/locales/es/profile.json b/packages/core/src/i18n/locales/es/profile.json
index e9b9b2c1..96046670 100644
--- a/packages/core/src/i18n/locales/es/profile.json
+++ b/packages/core/src/i18n/locales/es/profile.json
@@ -14,7 +14,17 @@
     "avgDaily": "Promedio diario",
     "readingActivity": "Actividad de lectura",
     "viewDetails": "Ver detalles",
-    "version": "ReadAny Mobile v{{version}}"
+    "version": "ReadAny Mobile v{{version}}",
+    "storage": "Almacenamiento",
+    "clearCache": "Limpiar caché",
+    "clearingCache": "Limpiando...",
+    "clearCacheTitle": "Limpiar caché",
+    "clearCacheConfirm": "Esto eliminará archivos temporales de importación, caché de audio TTS y otros cachés de ejecución. No se eliminarán libros, notas, ajustes ni datos de sincronización.",
+    "clearCacheAction": "Limpiar caché",
+    "clearCacheDoneTitle": "Caché limpiada",
+    "clearCacheDoneDesc": "Se eliminaron {{count}} archivo(s) en caché y se liberaron {{size}}.",
+    "clearCacheFailedTitle": "No se pudo limpiar la caché",
+    "clearCacheFailedDesc": "Inténtalo de nuevo más tarde."
   },
   "skills": {
     "title": "Habilidades",
diff --git a/packages/core/src/i18n/locales/fr/profile.json b/packages/core/src/i18n/locales/fr/profile.json
index 92ef1e1b..140f262d 100644
--- a/packages/core/src/i18n/locales/fr/profile.json
+++ b/packages/core/src/i18n/locales/fr/profile.json
@@ -14,7 +14,17 @@
     "avgDaily": "Moy. quotidienne",
     "readingActivity": "Activité de lecture",
     "viewDetails": "Voir les détails",
-    "version": "ReadAny Mobile v{{version}}"
+    "version": "ReadAny Mobile v{{version}}",
+    "storage": "Stockage",
+    "clearCache": "Vider le cache",
+    "clearingCache": "Nettoyage...",
+    "clearCacheTitle": "Vider le cache",
+    "clearCacheConfirm": "Cela supprimera les fichiers d'import temporaires, le cache audio TTS et les autres caches d'exécution. Les livres, notes, paramètres et données de synchronisation ne seront pas supprimés.",
+    "clearCacheAction": "Vider le cache",
+    "clearCacheDoneTitle": "Cache vidé",
+    "clearCacheDoneDesc": "{{count}} fichier(s) en cache supprimé(s), {{size}} libérés.",
+    "clearCacheFailedTitle": "Échec du nettoyage",
+    "clearCacheFailedDesc": "Veuillez réessayer plus tard."
   },
   "skills": {
     "title": "Compétences",
diff --git a/packages/core/src/i18n/locales/ja/profile.json b/packages/core/src/i18n/locales/ja/profile.json
index 423070ad..db9ac3d9 100644
--- a/packages/core/src/i18n/locales/ja/profile.json
+++ b/packages/core/src/i18n/locales/ja/profile.json
@@ -14,7 +14,17 @@
     "avgDaily": "日平均",
     "readingActivity": "読書アクティビティ",
     "viewDetails": "詳細を見る",
-    "version": "ReadAny Mobile v{{version}}"
+    "version": "ReadAny Mobile v{{version}}",
+    "storage": "ストレージ",
+    "clearCache": "キャッシュを削除",
+    "clearingCache": "削除中...",
+    "clearCacheTitle": "キャッシュを削除",
+    "clearCacheConfirm": "一時インポートファイル、TTS音声キャッシュ、その他の実行時キャッシュを削除します。書籍、ノート、設定、同期データは削除されません。",
+    "clearCacheAction": "キャッシュを削除",
+    "clearCacheDoneTitle": "キャッシュを削除しました",
+    "clearCacheDoneDesc": "{{count}}件のキャッシュファイルを削除し、{{size}}を解放しました。",
+    "clearCacheFailedTitle": "キャッシュの削除に失敗しました",
+    "clearCacheFailedDesc": "後でもう一度お試しください。"
   },
   "skills": {
     "title": "スキル",
diff --git a/packages/core/src/i18n/locales/ko/profile.json b/packages/core/src/i18n/locales/ko/profile.json
index 23150980..303b6740 100644
--- a/packages/core/src/i18n/locales/ko/profile.json
+++ b/packages/core/src/i18n/locales/ko/profile.json
@@ -14,7 +14,17 @@
     "avgDaily": "일 평균",
     "readingActivity": "독서 활동",
     "viewDetails": "상세 보기",
-    "version": "ReadAny Mobile v{{version}}"
+    "version": "ReadAny Mobile v{{version}}",
+    "storage": "저장 공간",
+    "clearCache": "캐시 삭제",
+    "clearingCache": "삭제 중...",
+    "clearCacheTitle": "캐시 삭제",
+    "clearCacheConfirm": "임시 가져오기 파일, TTS 오디오 캐시 및 기타 실행 캐시를 삭제합니다. 책, 노트, 설정 및 동기화 데이터는 삭제되지 않습니다.",
+    "clearCacheAction": "캐시 삭제",
+    "clearCacheDoneTitle": "캐시 삭제 완료",
+    "clearCacheDoneDesc": "캐시 파일 {{count}}개를 삭제하고 {{size}}를 확보했습니다.",
+    "clearCacheFailedTitle": "캐시 삭제 실패",
+    "clearCacheFailedDesc": "나중에 다시 시도해주세요."
   },
   "skills": {
     "title": "스킬",
diff --git a/packages/core/src/i18n/locales/zh-TW/profile.json b/packages/core/src/i18n/locales/zh-TW/profile.json
index b4152d65..acc26286 100644
--- a/packages/core/src/i18n/locales/zh-TW/profile.json
+++ b/packages/core/src/i18n/locales/zh-TW/profile.json
@@ -14,7 +14,17 @@
     "avgDaily": "日均",
     "readingActivity": "閱讀活動",
     "viewDetails": "查看詳情",
-    "version": "ReadAny Mobile v{{version}}"
+    "version": "ReadAny Mobile v{{version}}",
+    "storage": "儲存空間",
+    "clearCache": "清除快取",
+    "clearingCache": "清除中...",
+    "clearCacheTitle": "清除快取",
+    "clearCacheConfirm": "將清除暫存匯入檔案、TTS 音訊快取和其他執行快取。書籍、筆記、設定和同步資料不會被刪除。",
+    "clearCacheAction": "清除快取",
+    "clearCacheDoneTitle": "快取已清除",
+    "clearCacheDoneDesc": "已清除 {{count}} 個快取檔案，釋放 {{size}}。",
+    "clearCacheFailedTitle": "清除失敗",
+    "clearCacheFailedDesc": "請稍後再試。"
   },
   "skills": {
     "title": "技能管理",
diff --git a/packages/core/src/i18n/locales/zh/profile.json b/packages/core/src/i18n/locales/zh/profile.json
index e384ce16..a0f529f2 100644
--- a/packages/core/src/i18n/locales/zh/profile.json
+++ b/packages/core/src/i18n/locales/zh/profile.json
@@ -14,7 +14,17 @@
     "avgDaily": "日均",
     "readingActivity": "阅读活动",
     "viewDetails": "查看详情",
-    "version": "ReadAny Mobile v{{version}}"
+    "version": "ReadAny Mobile v{{version}}",
+    "storage": "存储",
+    "clearCache": "清除缓存",
+    "clearingCache": "清除中...",
+    "clearCacheTitle": "清除缓存",
+    "clearCacheConfirm": "将清除临时导入文件、TTS 音频缓存和其他运行缓存。书籍、笔记、设置和同步数据不会被删除。",
+    "clearCacheAction": "清除缓存",
+    "clearCacheDoneTitle": "缓存已清除",
+    "clearCacheDoneDesc": "已清除 {{count}} 个缓存文件，释放 {{size}}。",
+    "clearCacheFailedTitle": "清除失败",
+    "clearCacheFailedDesc": "请稍后重试。"
   },
   "skills": {
     "title": "技能管理",