diff --git a/android/.gitignore b/android/.gitignore
index 48354a3..9826129 100644
--- a/android/.gitignore
+++ b/android/.gitignore
@@ -99,3 +99,8 @@ app/src/main/assets/public
 app/src/main/assets/capacitor.config.json
 app/src/main/assets/capacitor.plugins.json
 app/src/main/res/xml/config.xml
+
+# 릴리스 서명 (절대 커밋 금지)
+*.jks
+*.keystore
+key.properties
diff --git a/android/app/build.gradle b/android/app/build.gradle
index 5490bf9..0c8aa49 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -1,5 +1,13 @@
 apply plugin: 'com.android.application'
 
+// 릴리스 서명: android/key.properties 가 있으면 사용, 없으면 디버그 서명으로 폴백.
+def keystorePropsFile = rootProject.file("key.properties")
+def keystoreProps = new Properties()
+if (keystorePropsFile.exists()) {
+    keystoreProps.load(new FileInputStream(keystorePropsFile))
+}
+def hasReleaseKeystore = keystorePropsFile.exists()
+
 android {
     namespace = "kr.sblog.slimbudget"
     compileSdk = rootProject.ext.compileSdkVersion
@@ -16,8 +24,20 @@ android {
             ignoreAssetsPattern = '!.svn:!.git:!.ds_store:!*.scc:.*:!CVS:!thumbs.db:!picasa.ini:!*~'
         }
     }
+    signingConfigs {
+        if (hasReleaseKeystore) {
+            release {
+                storeFile rootProject.file(keystoreProps['storeFile'])
+                storePassword keystoreProps['storePassword']
+                keyAlias keystoreProps['keyAlias']
+                keyPassword keystoreProps['keyPassword']
+            }
+        }
+    }
     buildTypes {
         release {
+            // 키스토어가 있으면 릴리스 서명, 없으면 디버그 서명(로컬 테스트용)
+            signingConfig hasReleaseKeystore ? signingConfigs.release : signingConfigs.debug
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }