diff --git a/install.sh b/install.sh
index d352a43..913d770 100755
--- a/install.sh
+++ b/install.sh
@@ -194,7 +194,6 @@ install_apps() {
         "crossover"                   # CrossOver - Windows 应用兼容层
         "zoom"                        # Zoom Workplace - 视频会议软件
         "tencent-meeting"             # 腾讯会议 - 视频会议软件
-        "topnotch"                    # Menu bar management tool
     )
     
     total=${#apps[@]}
@@ -239,6 +238,52 @@ install_cli_tools() {
         brew install prettyping
         print_message "✅ prettyping 安装成功！" "$GREEN"
     fi
+    
+    # mas - Mac App Store 命令行工具
+    if command -v mas &> /dev/null; then
+        print_message "✅ mas 已安装" "$GREEN"
+    else
+        brew install mas
+        print_message "✅ mas 安装成功！" "$GREEN"
+    fi
+}
+
+# 安装 Mac App Store 应用
+install_mas_apps() {
+    print_message "🛍️  安装 Mac App Store 应用..." "$BLUE"
+    
+    # 检查 mas 是否已安装
+    if ! command -v mas &> /dev/null; then
+        print_message "⚠️  mas 工具未安装，跳过 App Store 应用安装" "$YELLOW"
+        return
+    fi
+    
+    # Mac App Store 应用列表
+    mas_apps=(
+        "6444602274"  # Ivory - Mastodon 客户端
+    )
+    
+    total=${#mas_apps[@]}
+    installed=0
+    failed=0
+    
+    for app_id in "${mas_apps[@]}"; do
+        print_message "📦 正在安装 App Store 应用 ID: $app_id" "$YELLOW"
+        if mas install "$app_id" 2>/dev/null; then
+            print_message "✅ App Store 应用 $app_id 安装成功！" "$GREEN"
+            ((installed++))
+        else
+            print_message "❌ App Store 应用 $app_id 安装失败或已存在" "$RED"
+            ((failed++))
+        fi
+    done
+    
+    print_message "========================================" "$CYAN"
+    print_message "📊 Mac App Store 应用安装完成！" "$CYAN"
+    print_message "   总计: $total 个应用" "$CYAN"
+    print_message "   成功: $installed 个" "$GREEN"
+    print_message "   失败/已存在: $failed 个" "$RED"
+    print_message "========================================" "$CYAN"
 }
 
 # 配置 SSH
@@ -433,6 +478,7 @@ full_install() {
     install_xcodes
     install_apps
     install_cli_tools
+    install_mas_apps
     setup_ssh
     install_oh_my_zsh
     install_node
@@ -535,4 +581,4 @@ main() {
 # 只有在脚本被直接执行时才运行主函数
 if [[ "${BASH_SOURCE[0]}" == "${0}" ]] || [[ -z "${BASH_SOURCE[0]}" ]]; then
     main "$@"
-fibrew install --cask bcut
+fi