diff --git a/pcomfortcloud/constants.py b/pcomfortcloud/constants.py
index 6e625d7..2eb926a 100644
--- a/pcomfortcloud/constants.py
+++ b/pcomfortcloud/constants.py
@@ -58,3 +58,11 @@ class NanoeMode(Enum):
     On = 2
     ModeG = 3
     All = 4
+
+DEFAULT_X_APP_VERSION = "1.12.0"
+
+MAX_VERSION_AGE = 5
+
+SETTING_TOKEN = "token"
+SETTING_VERSION = "version"
+SETTING_VERSION_DATE = "versionDate"
\ No newline at end of file
diff --git a/pcomfortcloud/session.py b/pcomfortcloud/session.py
index 957a3f2..85bb5bf 100644
--- a/pcomfortcloud/session.py
+++ b/pcomfortcloud/session.py
@@ -8,8 +8,10 @@
 import urllib3
 import hashlib
 
+
 from . import urls
 from . import constants
+from .settings import PanasonicSettings
 
 def _validate_response(response):
     """ Verify that response is OK """
@@ -52,11 +54,13 @@ class Session(object):
 
     """
 
-    def __init__(self, username, password, tokenFileName='~/.panasonic-token', raw=False, verifySsl=True):
+    def __init__(self, username, password, settingsFileName='~/.panasonic-settings', raw=False, verifySsl=True):
         self._username = username
         self._password = password
-        self._tokenFileName = os.path.expanduser(tokenFileName)
+        self._settings = PanasonicSettings(os.path.expanduser(settingsFileName))
         self._vid = None
+        
+        self._appVersion = self._settings._version
         self._groups = None
         self._devices = None
         self._deviceIndexer = {}
@@ -69,6 +73,9 @@ def __init__(self, username, password, tokenFileName='~/.panasonic-token', raw=F
             self._verifySsl = os.path.join(os.path.dirname(__file__),
                     "certificatechain.pem")
 
+        if self._settings.version_expired:
+            self._updateAppVersion()
+
     def __enter__(self):
         self.login()
         return self
@@ -79,10 +86,8 @@ def __exit__(self, exc_type, exc_val, exc_tb):
     def login(self):
         """ Login to verisure app api """
 
-        if os.path.exists(self._tokenFileName):
-            with open(self._tokenFileName, 'r') as cookieFile:
-                self._vid = cookieFile.read().strip()
-
+        if self._settings.token is not None:
+            self._vid = self._settings.token
             if self._raw: print("--- token found")
 
             try:
@@ -93,12 +98,11 @@ def login(self):
 
                 self._vid = None
                 self._devices = None
-                os.remove(self._tokenFileName)
+                self._settings.token = None
 
         if self._vid is None:
             self._create_token()
-            with open(self._tokenFileName, 'w') as tokenFile:
-                tokenFile.write(self._vid)
+            self._settings.token = self._vid
 
             self._get_groups()
 
@@ -108,13 +112,28 @@ def logout(self):
     def _headers(self):
         return {
             "X-APP-TYPE": "1",
-            "X-APP-VERSION": "1.20.0",
+            "X-APP-VERSION": self._appVersion,
             "X-User-Authorization": self._vid,
             "User-Agent": "G-RAC",
             "Accept": "application/json",
             "Content-Type": "application/json"
         }
 
+    def _updateAppVersion(self):
+                
+        if self._raw: print("--- auto detecting latest app version")
+        try:            
+            data = requests.get("https://itunes.apple.com/lookup?id=1348640525").json()
+            version = data['results'][0]['version']
+            if version is not None:
+                if self._raw: print("--- found version: {}".format(version))
+                self._appVersion = version
+                self._settings.version = version
+                return
+        except:
+            pass
+        if self._raw: print("--- failed to detect app version using version: {}".format(self._appVersion))
+
     def _create_token(self):
         response = None
 
diff --git a/pcomfortcloud/settings.py b/pcomfortcloud/settings.py
new file mode 100644
index 0000000..f4e44c5
--- /dev/null
+++ b/pcomfortcloud/settings.py
@@ -0,0 +1,80 @@
+import json
+import os
+from datetime import date
+from packaging import version
+
+from .constants import (
+    SETTING_TOKEN,
+    SETTING_VERSION,
+    SETTING_VERSION_DATE,
+
+    DEFAULT_X_APP_VERSION,
+    MAX_VERSION_AGE
+)
+
+class PanasonicSettings:
+
+    def __init__(self, fileName):
+        self._fileName = fileName
+        self._token = None
+        self._version = None
+        self._versionDate = None
+        self._load()
+
+    def _load(self):
+        if not os.path.exists(self._fileName):
+            return
+        try:
+            with open(self._fileName) as json_file:
+                data = json.load(json_file)
+                self._token = data[SETTING_TOKEN]
+                self._version = data[SETTING_VERSION]
+                self._versionDate = date.fromisoformat(data[SETTING_VERSION_DATE])
+        except:
+            pass
+
+    def _save(self):
+        data = {}
+        data[SETTING_TOKEN] = self._token
+        data[SETTING_VERSION] = self._version
+        data[SETTING_VERSION_DATE] = self._versionDate.isoformat()
+        with open(self._fileName, 'w') as outfile:
+            json.dump(data, outfile)
+
+    @property
+    def token(self):
+        return self._token
+
+    @token.setter
+    def token(self, value):
+        if self._token == value:
+            return
+        self._token = value
+        self._save()
+
+    @property
+    def version(self):
+        if self._version is None:
+            return DEFAULT_X_APP_VERSION
+        return self._version
+
+    @version.setter
+    def version(self,value):
+        if value is None:
+            return
+        if (self._version is None
+            or version.parse(self._version) < version.parse(value)):
+            self._version = value
+        self._versionDate = date.today()
+        self._save()
+
+    @property
+    def version_expired(self):
+        if self._version is None:
+            return True
+        if self._versionDate is None:
+            return True
+        delta = date.today() - self._versionDate
+        if (delta.days < MAX_VERSION_AGE):
+            return False
+        return True