diff --git a/src/dndbuster/app.py b/src/dndbuster/app.py
index 5ea9eb1..ad67341 100644
--- a/src/dndbuster/app.py
+++ b/src/dndbuster/app.py
@@ -7,13 +7,6 @@ gi.require_version('Adw', '1')
 from gi.repository import GLib, Gio, Gtk, Adw
 
 
-def main():
-    # Create a new application
-    app = Application()
-    # Run the application
-    app.run(None)
-
-
 class Application(Adw.Application):
     def __init__(self) -> None:
         super().__init__(application_id='de.p1st.dndbuster')
@@ -61,21 +54,6 @@ class AppWindow(Gtk.ApplicationWindow):
 
         self.timer = Timer()
 
-    def update_progress(self) -> bool:
-        total_min = 25
-        total_sec = total_min * 60
-        delta_sec = self.timer.read()
-        progress = delta_sec / total_sec
-        self.progress_bar.set_fraction(progress)
-
-        if progress >= 1:
-            self.app.send_notification_timeout()
-            # Stop regularly calling update_progress()
-            return False
-
-        # Weather to continue regularly calling update_progress()
-        return not self.timer.is_paused()
-
     def on_button_start_restart_clicked(self, _widget) -> None:
         if not self.timer.is_started():
             self.reset_start_timer()
@@ -87,15 +65,8 @@ class AppWindow(Gtk.ApplicationWindow):
 
             self.update_label()
 
-    def reset_start_timer(self) -> None:
-        self.timer.reset()
-        self.timer.start()
-        self.progress_bar.set_visible(True)
         self.add_timeout()
 
-    def add_timeout(self) -> None:
-        GLib.timeout_add_seconds(1, self.update_progress)
-
     def on_button_pause_resume_clicked(self, _widget) -> None:
         if self.timer.is_paused():
             self.timer.resume()
@@ -110,6 +81,26 @@ class AppWindow(Gtk.ApplicationWindow):
         else:
             self.button_pause_resume.set_label("Pause")
 
+    def reset_start_timer(self) -> None:
+        self.timer.reset()
+        self.timer.start()
+        self.progress_bar.set_visible(True)
 
-if __name__ == '__main__':
-    main()
+    def add_timeout(self) -> None:
+        # Start regularly calling update_progress()
+        GLib.timeout_add_seconds(1, self.update_progress)
+
+    def update_progress(self) -> bool:
+        total_min = 0.1
+        total_sec = total_min * 60
+        delta_sec = self.timer.read()
+        progress = delta_sec / total_sec
+        self.progress_bar.set_fraction(progress)
+
+        if progress >= 1:
+            self.app.send_notification_timeout()
+            # Stop regularly calling update_progress()
+            return False
+
+        # Weather to continue regularly calling update_progress()
+        return not self.timer.is_paused()
diff --git a/src/dndbuster/main.py b/src/dndbuster/main.py
new file mode 100644
index 0000000..9686e14
--- /dev/null
+++ b/src/dndbuster/main.py
@@ -0,0 +1,12 @@
+from dndbuster.app import Application
+
+
+def main():
+    # Create a new application
+    app = Application()
+    # Run the application
+    app.run(None)
+
+
+if __name__ == '__main__':
+    main()