diff --git a/main.py b/main.py
index 0e24c55..488184a 100644
--- a/main.py
+++ b/main.py
@@ -43,7 +43,9 @@ def styling():
 
 def login_check():
     if not app.storage.user.get('authenticated', False):
-        return RedirectResponse('/login')
+        return False
+    else:
+        return True
 
 # Create a connection
 conn = MontyClient("db")
@@ -54,7 +56,8 @@ db = conn.letsswing
 # Routes
 @ui.page('/manager/{sede}/{livello}', title="Let's Swing Admin", favicon="assets/favicon.ico")
 def manager_page(sede:int, livello:int) -> None:
-   login_check()
+   if not login_check():
+        return RedirectResponse('/login')
    styling()
 
    manage = manager.Manager(handler)
@@ -66,20 +69,23 @@ app.add_static_files('/static', 'static')
 @ui.page('/', title="Let's Swing Admin", favicon="assets/favicon.ico")
 def index_page() -> None:
     
-    login_check()
+    if not login_check():
+        return RedirectResponse('/login')
     styling()
     index.main(db)
     
 
 @ui.page('/user/{userid}', title="Let's Swing Admin", favicon="assets/favicon.ico")
 def user_page(userid: str) -> None:
-    login_check()
+    if not login_check():
+        return RedirectResponse('/login')
     styling()
     user.main(userid, db, handler)
 
 @ui.page('/edit/{userid}/{sede}/{livello}', title="Let's Swing Admin", favicon="assets/favicon.ico")
 def useredit_page(userid: str, sede: int, livello: int) -> None:
-    login_check()
+    if not login_check():
+        return RedirectResponse('/login')
     styling()
     useredit.main(userid, sede, livello, db, handler)
 
@@ -113,6 +119,19 @@ def page_login() -> None:
         return RedirectResponse('/')
     ui.add_head_html('''
                         <link rel="manifest" href="/manifest.json">
+                        <style>
+                        .hbtn {
+                            opacity: 0;
+                            visibility: hidden;
+                            transition: visibility 0s linear 0.5s, opacity 0.5s linear; 
+                            }
+
+                            .hbtn.visible {
+                            opacity: 1;
+                            visibility: visible;
+                            transition-delay: 0s;
+                            }
+                        </style>
                         ''')
     ui.add_body_html(''' 
     <script>
@@ -128,7 +147,7 @@ def page_login() -> None:
       });
 
     </script>''')
-    async def alert():
+    async def install():
       await ui.run_javascript('''
         // Show the prompt
         if(!deferredPrompt)
@@ -144,9 +163,17 @@ def page_login() -> None:
             deferredPrompt = null;
             
             });''', respond=False)
-
+    async def installable(btn):
+        response = await ui.run_javascript('''
+                              return (deferredPrompt ? true : false);
+                              ''')
+        if response:
+            btn.classes("hbtn visible")
+            
     with ui.card().classes('absolute-center items-center'):
-        ui.button('Installa App', on_click=alert)
+        install_btn =ui.button('Installa App', on_click=install,icon="install_mobile").classes("hbtn").props("outline")
+        ui.timer(1, lambda: installable(install_btn), once=True)
+        
         ui.image('assets/logo.svg')
         ui.label('Let\'s Swing Admin').classes('text-2xl').style("text-align:center")
         username = ui.input('Username').on('keydown.enter', try_login).classes('w-full')