diff --git a/app/src/main/java/sopt/uni/UniApplication.kt b/app/src/main/java/sopt/uni/UniApplication.kt
index 1c41270..bd58145 100644
--- a/app/src/main/java/sopt/uni/UniApplication.kt
+++ b/app/src/main/java/sopt/uni/UniApplication.kt
@@ -12,12 +12,31 @@ import timber.log.Timber
 class UniApplication : Application() {
     override fun onCreate() {
         super.onCreate()
+        initializeSparkleStorage()
+        initializeKakaoSdk()
+        initializeDebugTree()
+        setDefaultNightMode()
+        clearSharedPreferences()
+    }
+
+    private fun initializeSparkleStorage() {
         SparkleStorage.init(this)
         SparkleStorage.timerClear()
+    }
+
+    private fun initializeKakaoSdk() {
         KakaoSdk.init(this, BuildConfig.KAKAO_APP_KEY)
+    }
+
+    private fun initializeDebugTree() {
         if (BuildConfig.DEBUG) Timber.plant(Timber.DebugTree())
+    }
+
+    private fun setDefaultNightMode() {
         AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO)
+    }
 
+    private fun clearSharedPreferences() {
         val sharedPreferences =
             applicationContext.getSharedPreferences("timer_prefs", Context.MODE_PRIVATE)
         val editor = sharedPreferences.edit()