diff --git a/start.py b/start.py
index 1623f1d..9db1689 100644
--- a/start.py
+++ b/start.py
@@ -1,31 +1,45 @@
-# v1.0.3 start.py
 import os
-
-os.environ["QT_ENABLE_HIGHDPI_SCALING"] = "1"
-os.environ["QT_AUTO_SCREEN_SCALE_FACTOR"] = "1"
-
 import signal
 import sys
 import traceback
 
+os.environ["QT_ENABLE_HIGHDPI_SCALING"] = "1"
+os.environ["QT_AUTO_SCREEN_SCALE_FACTOR"] = "1"
+
 from PyQt6.QtCore import Qt
 from PyQt6.QtGui import QGuiApplication
 from PyQt6.QtWidgets import QApplication
 
+from config.settings import (
+    APP_DIR,
+)
 from core.app import StickyNoteApp
 
 
+APP_DIR.mkdir(
+    parents=True,
+    exist_ok=True,
+)
+
 QGuiApplication.setHighDpiScaleFactorRoundingPolicy(
     Qt.HighDpiScaleFactorRoundingPolicy.PassThrough
 )
 
 
 def main() -> int:
-    signal.signal(signal.SIGINT, signal.SIG_DFL)
+    signal.signal(
+        signal.SIGINT,
+        signal.SIG_DFL,
+    )
 
     app = QApplication(sys.argv)
 
+    app.setQuitOnLastWindowClosed(
+        False
+    )
+
     window = StickyNoteApp()
+
     window.show()
 
     try: