diff --git a/build/android/app/src/main/AndroidManifest.xml b/build/android/app/src/main/AndroidManifest.xml
index f4736da..ec734d7 100644
--- a/build/android/app/src/main/AndroidManifest.xml
+++ b/build/android/app/src/main/AndroidManifest.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    android:versionCode="18"
-    android:versionName="1.0.2">
+    android:versionCode="19"
+    android:versionName="1.0.3">
 
     <application
         android:allowBackup="false"
diff --git a/build/android/stack b/build/android/stack
new file mode 100755
index 0000000..1caae47
--- /dev/null
+++ b/build/android/stack
@@ -0,0 +1,6 @@
+#!/bin/bash
+BUILD="$1"
+if [[ -z "$1" ]]; then
+    BUILD="debug"
+fi
+adb logcat | ndk-stack -sym ./app/build/intermediates/merged_native_libs/"$BUILD"/out/lib/arm64-v8a
diff --git a/src/demo/menu.cc b/src/demo/menu.cc
index f58d269..2bfd91c 100644
--- a/src/demo/menu.cc
+++ b/src/demo/menu.cc
@@ -22,7 +22,7 @@ using namespace eng;
 
 namespace {
 
-constexpr char kVersionStr[] = "Version 1.0.2";
+constexpr char kVersionStr[] = "Version 1.0.3";
 
 constexpr char kMenuOption[Menu::kOption_Max][10] = {"continue", "start",
                                                      "credits", "exit"};
diff --git a/src/engine/engine.cc b/src/engine/engine.cc
index 6d41bc4..569f78a 100644
--- a/src/engine/engine.cc
+++ b/src/engine/engine.cc
@@ -22,8 +22,6 @@
 #include "engine/shader_source.h"
 #include "third_party/texture_compressor/texture_compressor.h"
 
-#define USE_VULKAN_RENDERER 1
-
 using namespace base;
 
 namespace eng {