diff --git a/build_business.sh b/build_business.sh
new file mode 100644
index 0000000..7479b50
--- /dev/null
+++ b/build_business.sh
@@ -0,0 +1,66 @@
+#!/bin/bash
+# ============================================================================
+# Ponshu Room Lite - 店舗向けAPKビルドスクリプト
+# IS_BUSINESS_APP=true / IS_PRO_VERSION=false
+# ============================================================================
+
+set -e
+
+TIMESTAMP=$(date +%Y-%m-%d_%H-%M-%S)
+OUTPUT_DIR="build/apk_releases/$TIMESTAMP"
+mkdir -p "$OUTPUT_DIR"
+
+# APIキー (.env から読み込む)
+if [ -f "$(dirname "$0")/.env" ]; then
+  export $(grep -v '^#' "$(dirname "$0")/.env" | xargs)
+fi
+MAITA_KEY="${MAITA_API_KEY:?MAITA_API_KEY is not set in .env}"
+EIJI_KEY="${EIJI_API_KEY:?EIJI_API_KEY is not set in .env}"
+
+# build.gradle.kts バックアップ
+GRADLE_FILE="android/app/build.gradle.kts"
+BACKUP_FILE="android/app/build.gradle.kts.backup"
+cp "$GRADLE_FILE" "$BACKUP_FILE"
+
+cleanup() {
+    if [ -f "$BACKUP_FILE" ]; then
+        cp "$BACKUP_FILE" "$GRADLE_FILE"
+        rm "$BACKUP_FILE"
+    fi
+}
+trap cleanup EXIT
+
+echo "============================================================================"
+echo "Ponshu Room Lite - Business APK Build"
+echo "============================================================================"
+echo "Output: $OUTPUT_DIR"
+echo ""
+
+sed -i 's/applicationId = "com.posimai.ponshu_room"/applicationId = "com.posimai.ponshu_room_lite"/' "$GRADLE_FILE"
+
+echo "[1/2] Building Maita Business..."
+flutter build apk --release \
+  --dart-define=GEMINI_API_KEY=$MAITA_KEY \
+  --dart-define=IS_PRO_VERSION=false \
+  --dart-define=IS_BUSINESS_APP=true \
+  --dart-define=USE_PROXY=false
+
+cp build/app/outputs/flutter-apk/app-release.apk "$OUTPUT_DIR/ponshu_room_business_maita.apk"
+echo "Saved: $OUTPUT_DIR/ponshu_room_business_maita.apk"
+echo ""
+
+echo "[2/2] Building Eiji Business..."
+flutter build apk --release \
+  --dart-define=GEMINI_API_KEY=$EIJI_KEY \
+  --dart-define=IS_PRO_VERSION=false \
+  --dart-define=IS_BUSINESS_APP=true \
+  --dart-define=USE_PROXY=false
+
+cp build/app/outputs/flutter-apk/app-release.apk "$OUTPUT_DIR/ponshu_room_business_eiji.apk"
+echo "Saved: $OUTPUT_DIR/ponshu_room_business_eiji.apk"
+echo ""
+
+echo "============================================================================"
+echo "Business build completed!"
+echo "============================================================================"
+ls -lh "$OUTPUT_DIR"
diff --git a/build_consumer.sh b/build_consumer.sh
new file mode 100644
index 0000000..2a2caf4
--- /dev/null
+++ b/build_consumer.sh
@@ -0,0 +1,66 @@
+#!/bin/bash
+# ============================================================================
+# Ponshu Room Lite - 消費者向けAPKビルドスクリプト
+# IS_BUSINESS_APP=false / IS_PRO_VERSION=false
+# ============================================================================
+
+set -e
+
+TIMESTAMP=$(date +%Y-%m-%d_%H-%M-%S)
+OUTPUT_DIR="build/apk_releases/$TIMESTAMP"
+mkdir -p "$OUTPUT_DIR"
+
+# APIキー (.env から読み込む)
+if [ -f "$(dirname "$0")/.env" ]; then
+  export $(grep -v '^#' "$(dirname "$0")/.env" | xargs)
+fi
+MAITA_KEY="${MAITA_API_KEY:?MAITA_API_KEY is not set in .env}"
+EIJI_KEY="${EIJI_API_KEY:?EIJI_API_KEY is not set in .env}"
+
+# build.gradle.kts バックアップ
+GRADLE_FILE="android/app/build.gradle.kts"
+BACKUP_FILE="android/app/build.gradle.kts.backup"
+cp "$GRADLE_FILE" "$BACKUP_FILE"
+
+cleanup() {
+    if [ -f "$BACKUP_FILE" ]; then
+        cp "$BACKUP_FILE" "$GRADLE_FILE"
+        rm "$BACKUP_FILE"
+    fi
+}
+trap cleanup EXIT
+
+echo "============================================================================"
+echo "Ponshu Room Lite - Consumer APK Build"
+echo "============================================================================"
+echo "Output: $OUTPUT_DIR"
+echo ""
+
+sed -i 's/applicationId = "com.posimai.ponshu_room"/applicationId = "com.posimai.ponshu_room_lite"/' "$GRADLE_FILE"
+
+echo "[1/2] Building Maita Consumer..."
+flutter build apk --release \
+  --dart-define=GEMINI_API_KEY=$MAITA_KEY \
+  --dart-define=IS_PRO_VERSION=false \
+  --dart-define=IS_BUSINESS_APP=false \
+  --dart-define=USE_PROXY=false
+
+cp build/app/outputs/flutter-apk/app-release.apk "$OUTPUT_DIR/ponshu_room_consumer_maita.apk"
+echo "Saved: $OUTPUT_DIR/ponshu_room_consumer_maita.apk"
+echo ""
+
+echo "[2/2] Building Eiji Consumer..."
+flutter build apk --release \
+  --dart-define=GEMINI_API_KEY=$EIJI_KEY \
+  --dart-define=IS_PRO_VERSION=false \
+  --dart-define=IS_BUSINESS_APP=false \
+  --dart-define=USE_PROXY=false
+
+cp build/app/outputs/flutter-apk/app-release.apk "$OUTPUT_DIR/ponshu_room_consumer_eiji.apk"
+echo "Saved: $OUTPUT_DIR/ponshu_room_consumer_eiji.apk"
+echo ""
+
+echo "============================================================================"
+echo "Consumer build completed!"
+echo "============================================================================"
+ls -lh "$OUTPUT_DIR"
diff --git a/lib/main.dart b/lib/main.dart
index 862b186..d54da7a 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -18,6 +18,15 @@ import 'services/migration_service.dart';
 /// デフォルトはfalse（Lite版） ※ponshu_room_liteディレクトリのため
 const bool isProVersion = bool.fromEnvironment('IS_PRO_VERSION', defaultValue: false);
 
+/// 店舗向けビルドかどうかを判定するビルド時フラグ
+///
+/// ビルドコマンド:
+/// - 消費者向け: flutter build apk --release --dart-define=IS_BUSINESS_APP=false
+/// - 店舗向け:   flutter build apk --release --dart-define=IS_BUSINESS_APP=true
+///
+/// デフォルトはfalse（消費者向け）
+const bool isBusinessApp = bool.fromEnvironment('IS_BUSINESS_APP', defaultValue: false);
+
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
diff --git a/lib/screens/main_screen.dart b/lib/screens/main_screen.dart
index 7827522..2e4d2a0 100644
--- a/lib/screens/main_screen.dart
+++ b/lib/screens/main_screen.dart
@@ -127,7 +127,8 @@ class _MainScreenState extends ConsumerState<MainScreen> {
     });
 
     final userProfile = ref.watch(userProfileProvider);
-    final isBusiness = userProfile.isBusinessMode;
+    // isBusinessApp=false（消費者向けビルド）では店舗モードを完全に無効化
+    final isBusiness = isBusinessApp && userProfile.isBusinessMode;
     final t = Translations(userProfile.locale); // Translation helper
 
     // Define Screens for each mode