diff --git a/apps/jingrow/frontend/src/views/dev/AppDetail.vue b/apps/jingrow/frontend/src/views/dev/AppDetail.vue
index c75ce03..530759a 100644
--- a/apps/jingrow/frontend/src/views/dev/AppDetail.vue
+++ b/apps/jingrow/frontend/src/views/dev/AppDetail.vue
@@ -12,7 +12,23 @@
             </template>
             {{ t('Back') }}
           </n-button>
-          <n-button type="primary" @click="installApp" size="medium">
+          <n-button 
+            v-if="isCurrentAppInstalled"
+            type="warning" 
+            @click="installApp" 
+            size="medium"
+          >
+            <template #icon>
+              <n-icon><Icon icon="tabler:download" /></n-icon>
+            </template>
+            {{ t('Update') }}
+          </n-button>
+          <n-button 
+            v-else
+            type="primary" 
+            @click="installApp" 
+            size="medium"
+          >
             <template #icon>
               <n-icon><Icon icon="tabler:download" /></n-icon>
             </template>
@@ -151,6 +167,9 @@ const installMessage = ref('')
 const installStatus = ref<'success' | 'error' | 'info'>('info')
 const showProgressModal = ref(false)
 
+// 已安装应用集合
+const installedAppNames = ref<Set<string>>(new Set())
+
 const appName = computed(() => route.params.name as string)
 
 async function loadAppDetail() {
@@ -261,6 +280,16 @@ async function performInstall() {
       installMessage.value = t('应用安装成功！')
       message.success(t('应用安装成功'))
       
+      // 刷新已安装应用列表，强制从 API 获取最新数据
+      try {
+        const refreshResponse = await axios.get('/jingrow/installed-app-names')
+        if (refreshResponse.data.success) {
+          installedAppNames.value = new Set(refreshResponse.data.apps || [])
+        }
+      } catch (error) {
+        console.error('Refresh installed apps error:', error)
+      }
+      
       setTimeout(() => {
         showProgressModal.value = false
       }, 2000)
@@ -280,8 +309,39 @@ async function performInstall() {
   }
 }
 
+// 加载已安装应用列表
+async function loadInstalledApps() {
+  try {
+    const response = await axios.get('/jingrow/installed-app-names')
+    if (response.data.success) {
+      const apps = response.data.apps || []
+      installedAppNames.value = new Set(apps)
+    }
+  } catch (error) {
+    console.error('Load installed apps error:', error)
+  }
+}
+
+// 检查应用是否已安装
+function isAppInstalled(appName: string): boolean {
+  if (!appName) return false
+  return installedAppNames.value.has(appName.toLowerCase())
+}
+
+// 检查当前应用是否已安装
+const isCurrentAppInstalled = computed(() => {
+  if (!app.value) return false
+  return isAppInstalled(app.value.app_name || app.value.name || '')
+})
+
 onMounted(() => {
   loadAppDetail()
+  loadInstalledApps()
+  
+  // 简化：直接监听 window 事件
+  window.addEventListener('installedAppsUpdated', () => {
+    loadInstalledApps()
+  })
 })
 </script>
 
diff --git a/apps/jingrow/frontend/src/views/dev/AppMarketplace.vue b/apps/jingrow/frontend/src/views/dev/AppMarketplace.vue
index 1710049..803f383 100644
--- a/apps/jingrow/frontend/src/views/dev/AppMarketplace.vue
+++ b/apps/jingrow/frontend/src/views/dev/AppMarketplace.vue
@@ -314,8 +314,15 @@ async function performInstall(app: any) {
       installMessage.value = t('应用安装成功！')
       message.success(t('应用安装成功'))
       
-      // 刷新已安装应用列表
-      loadInstalledApps()
+      // 刷新已安装应用列表，强制从 API 获取最新数据
+      try {
+        const refreshResponse = await axios.get('/jingrow/installed-app-names')
+        if (refreshResponse.data.success) {
+          installedAppNames.value = new Set(refreshResponse.data.apps || [])
+        }
+      } catch (error) {
+        console.error('Refresh installed apps error:', error)
+      }
       
       setTimeout(() => {
         showProgressModal.value = false
@@ -361,23 +368,10 @@ function truncateText(text: string, maxLength: number): string {
 // 加载已安装应用列表
 async function loadInstalledApps() {
   try {
-    const cached = sessionStorage.getItem('installed_apps_names')
-    if (cached) {
-      const data = JSON.parse(cached)
-      if (Date.now() - data.timestamp < 30 * 60 * 1000) {
-        installedAppNames.value = new Set(data.apps || [])
-        return
-      }
-    }
-    
     const response = await axios.get('/jingrow/installed-app-names')
     if (response.data.success) {
       const apps = response.data.apps || []
       installedAppNames.value = new Set(apps)
-      sessionStorage.setItem('installed_apps_names', JSON.stringify({
-        apps,
-        timestamp: Date.now()
-      }))
     }
   } catch (error) {
     console.error('Load installed apps error:', error)
@@ -393,6 +387,11 @@ function isAppInstalled(appName: string): boolean {
 onMounted(() => {
   loadApps()
   loadInstalledApps()
+  
+  // 简化：直接监听 window 事件
+  window.addEventListener('installedAppsUpdated', () => {
+    loadInstalledApps()
+  })
 })
 
 // 监听搜索和排序变化
diff --git a/apps/jingrow/frontend/src/views/dev/InstalledApps.vue b/apps/jingrow/frontend/src/views/dev/InstalledApps.vue
index 98992d9..349cd5b 100644
--- a/apps/jingrow/frontend/src/views/dev/InstalledApps.vue
+++ b/apps/jingrow/frontend/src/views/dev/InstalledApps.vue
@@ -140,7 +140,24 @@ const uninstallApp = async (app: any) => {
         
         if (response.data.success) {
           message.success(t('App \'{0}\' uninstalled successfully').replace('{0}', app.name))
+          
+          // 获取最新列表并更新缓存
+          try {
+            const refreshResponse = await axios.get('/jingrow/installed-app-names', {
+              headers: get_session_api_headers()
+            })
+            if (refreshResponse.data.success) {
+            // 触发全局事件通知其他页面刷新
+            window.dispatchEvent(new Event('installedAppsUpdated'))
+            }
+          } catch (error) {
+            console.error('Refresh installed apps error:', error)
+          }
+          
           await loadInstalledApps()
+          
+          // 通知其他标签页刷新（通过 localStorage）
+          localStorage.setItem('installed_apps_updated', Date.now().toString())
         } else {
           message.error(response.data.error || t('Failed to uninstall app'))
         }
diff --git a/apps/jingrow/jingrow/api/local_app_installer.py b/apps/jingrow/jingrow/api/local_app_installer.py
index 53dae00..0bbe82e 100644
--- a/apps/jingrow/jingrow/api/local_app_installer.py
+++ b/apps/jingrow/jingrow/api/local_app_installer.py
@@ -246,8 +246,10 @@ async def get_installed_app_names():
                 if pkg_name:
                     installed.add(pkg_name.lower())
         
+        print(f"[DEBUG] Installed apps from API: {list(installed)}")
         return {'success': True, 'apps': list(installed)}
     except Exception as e:
+        print(f"[DEBUG] Error in installed-app-names: {str(e)}")
         return {'success': False, 'error': str(e), 'apps': []}