diff --git a/src/System/Integrate/Application.php b/src/System/Integrate/Application.php
index d11a44f8..f00b4fb7 100644
--- a/src/System/Integrate/Application.php
+++ b/src/System/Integrate/Application.php
@@ -251,7 +251,8 @@ public function loadConfig(ConfigRepository $configs): void
         $this->set('config', fn (): ConfigRepository => $configs);
 
         // base env
-        $this->set('environment', $configs['ENVIRONMENT']);
+        $this->set('environment', $configs['APP_ENV'] ?? $configs['ENVIRONMENT']);
+        $this->set('app.debug', $configs['APP_DEBUG']);
         // application path
         $this->setAppPath($this->basePath());
         $this->setModelPath($configs['MODEL_PATH']);
@@ -293,6 +294,7 @@ public function defaultConfigs()
             'time_zone'             => 'Asia/Jakarta',
             'APP_KEY'               => '',
             'ENVIRONMENT'           => 'dev',
+            'APP_DEBUG'             => false,
 
             'COMMAND_PATH'          => DIRECTORY_SEPARATOR . 'app' . DIRECTORY_SEPARATOR . 'Commands' . DIRECTORY_SEPARATOR,
             'CONTROLLER_PATH'       => DIRECTORY_SEPARATOR . 'app' . DIRECTORY_SEPARATOR . 'Controllers' . DIRECTORY_SEPARATOR,
@@ -818,6 +820,16 @@ public function environment()
         return $this->get('environment');
     }
 
+    /**
+     * Detect application debug enable.
+     *
+     * @return bool
+     */
+    public function isDebugMode()
+    {
+        return $this->get('app.debug');
+    }
+
     /**
      * Detect application prodaction mode.
      *
diff --git a/tests/Integrate/ApplicationTest.php b/tests/Integrate/ApplicationTest.php
index e128929d..6110da5d 100644
--- a/tests/Integrate/ApplicationTest.php
+++ b/tests/Integrate/ApplicationTest.php
@@ -52,6 +52,46 @@ public function itCanLoadConfigFromDefault()
         $app->flush();
     }
 
+    /**
+     * @test
+     */
+    public function itCanLoadEnvironment()
+    {
+        $app = new Application('/');
+
+        $env = $app->defaultConfigs();
+        $app->loadConfig(new ConfigRepository($env));
+        $this->assertTrue($app->isDev());
+        $this->assertFalse($app->isProduction());
+
+        $env['ENVIRONMENT'] = 'test';
+
+        $app->loadConfig(new ConfigRepository($env));
+        $this->assertEquals('test', $app->environment());
+
+        // APP_ENV
+        $env['APP_ENV'] = 'dev';
+
+        $app->loadConfig(new ConfigRepository($env));
+        $this->assertEquals('dev', $app->environment());
+
+        $app->flush();
+    }
+
+    /**
+     * @test
+     */
+    public function itCanDetectDebugMode()
+    {
+        $app = new Application('/');
+
+        $env = $app->defaultConfigs();
+        $app->loadConfig(new ConfigRepository($env));
+        $this->assertFalse($app->isDebugMode());
+
+        $app->flush();
+    }
+
     /** @test */
     public function itCanNotDuplicateRegister()
     {
@@ -247,6 +287,7 @@ private function defaultConfigs()
             'time_zone'             => 'Asia/Jakarta',
             'APP_KEY'               => '',
             'ENVIRONMENT'           => 'dev',
+            'APP_DEBUG'             => false,
 
             'COMMAND_PATH'          => DIRECTORY_SEPARATOR . 'app' . DIRECTORY_SEPARATOR . 'Commands' . DIRECTORY_SEPARATOR,
             'CONTROLLER_PATH'       => DIRECTORY_SEPARATOR . 'app' . DIRECTORY_SEPARATOR . 'Controllers' . DIRECTORY_SEPARATOR,