diff --git a/src/backend/backend_ga4.py b/src/backend/backend_ga4.py
index 65eff7f..eb6c49a 100644
--- a/src/backend/backend_ga4.py
+++ b/src/backend/backend_ga4.py
@@ -56,6 +56,7 @@ def __init__(self, tid: str = None, app_name: str = None, app_version: str = Non
         self.default_message_attrs = {
             'app_name': self.app_name,
             'app_version': self.app_version,
+            'os': system(),
         }
         self.stats = {}
 
diff --git a/src/main.py b/src/main.py
index 445a33f..25372b1 100644
--- a/src/main.py
+++ b/src/main.py
@@ -55,10 +55,10 @@ def __init__(self, app_name: str = None, app_version: str = None, tid: str = Non
                                    'application name, version and TID.')
             return
 
-        self.init(app_name, app_version, tid, backend, enable_opt_in_dialog, disable_in_ci)
+        self.init(app_name, app_version, tid, backend, enable_opt_in_dialog, disable_in_ci, True)
 
     def init(self, app_name: str = None, app_version: str = None, tid: str = None,
-             backend: [str, None] = 'ga', enable_opt_in_dialog=True, disable_in_ci=False):
+             backend: [str, None] = 'ga', enable_opt_in_dialog=True, disable_in_ci=False, increment_stats=False):
         opt_in_checker = OptInChecker()
         opt_in_check_result = opt_in_checker.check(enable_opt_in_dialog, disable_in_ci)
         if enable_opt_in_dialog:
@@ -78,7 +78,7 @@ def init(self, app_name: str = None, app_version: str = None, tid: str = None,
             self.backend.generate_new_cid_file()
 
         if self.consent:
-            data = self.get_stats()
+            data = self.get_stats(increment_stats)
             if data is not None and isinstance(data, dict):
                 self.backend.set_stats(data)
 
@@ -291,7 +291,7 @@ def send_opt_in_event(self, new_state: OptInStatus, prev_state: OptInStatus = Op
             label = "{{prev_state:{}, new_state: {}}}".format(prev_state.value, new_state.value)
             self.send_event("opt_in", new_state.value, label, force_send=force_send)
 
-    def get_stats(self):
+    def get_stats(self, update_usage_num: bool):
         stats = StatsProcessor()
         file_exists, data = stats.get_stats()
         if not file_exists:
@@ -301,12 +301,26 @@ def get_stats(self):
                 return None
         if "usage_count" in data:
             usage_count = data["usage_count"]
-            if usage_count < sys.maxsize:
+            if usage_count is None or not isinstance(usage_count, int) or usage_count <= 0:
+                log.warning("Invalid usage count.")
+                return data
+            if usage_count < sys.maxsize and update_usage_num:
                 usage_count += 1
         else:
             usage_count = 1
         data["usage_count"] = usage_count
         stats.update_stats(data)
+        if usage_count == 1:
+            data["usage_group"] = "first_usage"
+        elif usage_count <= 100:
+            data["usage_group"] = "1-100_usages"
+        elif usage_count <= 1000:
+            data["usage_group"] = "101-1000_usages"
+        elif usage_count <= 5000:
+            data["usage_group"] = "1001-5000_usages"
+        else:
+            data["usage_group"] = "5000+_usages"
+
         return data
 
     @staticmethod
diff --git a/src/main_test.py b/src/main_test.py
index 9622095..e3d50a9 100644
--- a/src/main_test.py
+++ b/src/main_test.py
@@ -4,6 +4,7 @@
 import os
 import unittest
 import uuid
+from platform import system
 from tempfile import TemporaryDirectory
 from unittest.mock import MagicMock, call, patch
 
@@ -73,8 +74,10 @@ def make_message(self, client_id, app_name, app_version, category, action, label
                                          'session_id': session_id,
                                          'app_name': app_name,
                                          'app_version': app_version,
+                                         'os': system(),
+                                         'docker': 'False',
                                          'usage_count': 1,
-                                         'docker': 'False'}
+                                         'usage_group': 'first_usage'}
                                     }
                                ]}