diff --git a/app/src/main/java/kz/istt/locust/MySynchronizationOld.java b/app/src/main/java/kz/istt/locust/MySynchronizationOld.java
index 6b66e92..c24f1b2 100644
--- a/app/src/main/java/kz/istt/locust/MySynchronizationOld.java
+++ b/app/src/main/java/kz/istt/locust/MySynchronizationOld.java
@@ -73,6 +73,7 @@ public class MySynchronizationOld
 {
 	public static String URL="https://ccalm.org";
 	//public static String URL="http://192.168.200.100:8080";
+	public static int SyncDays=30;
 
 	private Context _context; //От какого контекста показывать алерты
 	//private boolean _showAlert; //Показывать ли окно подождите пожалуйста (его нельзя создавать если в сервисе)
@@ -138,6 +139,7 @@ public class MySynchronizationOld
 		String URL = MySynchronizationOld.URL;
 		SharedPreferences prefs = _context.getSharedPreferences("CommonPrefs", Activity.MODE_PRIVATE);
 		URL = prefs.getString("URL", "");
+		MySynchronizationOld.SyncDays = prefs.getInt("SynDays", MySynchronizationOld.SyncDays);
 		if(URLUtil.isValidUrl(URL))
 			MySynchronizationOld.URL = URL;
 	}
diff --git a/app/src/main/java/kz/istt/locust/SetupActivity.java b/app/src/main/java/kz/istt/locust/SetupActivity.java
index 3d43d0c..9ff6544 100644
--- a/app/src/main/java/kz/istt/locust/SetupActivity.java
+++ b/app/src/main/java/kz/istt/locust/SetupActivity.java
@@ -60,6 +60,7 @@ public class SetupActivity extends Activity {
 	public Button btnQR = null;
 	public Button btnDeleteAllData = null;
 	public EditText edtURL = null;
+	public EditText edtSyncDays = null;
 	public CheckBox cbIdentifyCountryRegion = null;
 	public CheckBox cbShowAdvancedSettings = null;
 
@@ -101,7 +102,10 @@ public class SetupActivity extends Activity {
 		
 		//Загрузка сохранёного языка
 		Tools.loadLocale(this);
-		
+
+		//Прячу всё что должно быть спрятано
+		((LinearLayout)findViewById(R.id.llShowAdvancedSettings)).setVisibility(View.GONE);
+
 		tvSynchronization = (TextView)findViewById(R.id.tvSynchronization);
 
 		//Кнопочка синхронизировать
@@ -338,6 +342,28 @@ public class SetupActivity extends Activity {
 			}
 		});
 
+		edtSyncDays = (EditText) findViewById(R.id.edtSyncDays);
+		edtSyncDays.setText(MySynchronizationOld.SyncDays);
+
+		edtSyncDays.addTextChangedListener(new TextWatcher() {
+			@Override
+			public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
+			@Override
+			public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
+			@Override
+			public void afterTextChanged(Editable editable) {
+				try {
+					MySynchronizationOld.SyncDays=Integer.parseInt(edtSyncDays.toString());
+					SharedPreferences prefs = SetupActivity.this.getSharedPreferences("CommonPrefs", Activity.MODE_PRIVATE);
+					SharedPreferences.Editor editor = prefs.edit();
+					editor.putInt("SyncDays", MySynchronizationOld.SyncDays);
+					editor.apply(); // or editor.commit(); if you want to save synchronously
+				} catch (NumberFormatException e) {
+					Toast.makeText(SetupActivity.this, "Invalid integer", Toast.LENGTH_SHORT).show();
+				}
+			}
+		});
+
 		//Button delete all data
 		OnClickListener oclDeleteAllData = new OnClickListener()
 		{
diff --git a/app/src/main/res/layout/activity_setup.xml b/app/src/main/res/layout/activity_setup.xml
index e7423c6..782d857 100644
--- a/app/src/main/res/layout/activity_setup.xml
+++ b/app/src/main/res/layout/activity_setup.xml
@@ -225,34 +225,45 @@
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:text="@string/Show_advanced_settings"/>
+
             <LinearLayout
                 android:id="@+id/llShowAdvancedSettings"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:orientation="vertical"
-                android:visibility="gone">
-                <LinearLayout
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content">
-                    <TextView
-                        android:layout_width="wrap_content"
-                        android:layout_height="wrap_content"
-                        android:text="@string/URL_path_to_the_server"
-                        android:textAppearance="?android:attr/textAppearanceSmall"/>
-                </LinearLayout>
+                android:orientation="vertical">
+
                 <LinearLayout
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content">
+
                     <EditText
                         android:id="@+id/edtURL"
+                        android:hint="@string/URL_path_to_the_server"
                         android:layout_width="0dp"
                         android:layout_height="wrap_content"
                         android:layout_weight="1"
-                        android:importantForAutofill="no"
                         android:autofillHints=""
                         android:ems="10"
+                        android:importantForAutofill="no"
                         android:inputType="textUri" />
                 </LinearLayout>
+
+                <LinearLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content">
+
+                    <EditText
+                        android:id="@+id/edtSyncDays"
+                        android:hint="@string/Days_of_synchronization"
+                        android:layout_width="0dp"
+                        android:layout_height="wrap_content"
+                        android:layout_weight="1"
+                        android:autofillHints=""
+                        android:ems="10"
+                        android:importantForAutofill="no"
+                        android:inputType="numberDecimal" />
+                </LinearLayout>
+
                 <LinearLayout
                     android:layout_width="match_parent"
                     android:layout_height="match_parent"
@@ -263,9 +274,9 @@
                         android:id="@+id/btnDeleteAllData"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
+                        android:layout_margin="2dp"
                         android:minWidth="190dp"
                         android:minHeight="40dp"
-                        android:layout_margin="2dp"
                         android:text="@string/Delete_all_data" />
 
                 </LinearLayout>
diff --git a/app/src/main/res/values-az/strings.xml b/app/src/main/res/values-az/strings.xml
index fb518ef..f965e33 100644
--- a/app/src/main/res/values-az/strings.xml
+++ b/app/src/main/res/values-az/strings.xml
@@ -336,4 +336,6 @@
     <string name="Commercial_product_diluted">Ticarət məhsulu seyreltilirmi?</string>
     <string name="Working_fluid_dilution_ratio">İşçi mayenin seyreltmə nisbəti</string>
 	<string name="Show_advanced_settings">Qabaqcıl parametrləri göstərin</string>
+
+
 </resources>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index dd5af49..5924367 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -446,6 +446,7 @@
 	<string name="Human_Health_and_Environment_HH_Env_Monitoring_Form">Мониторинг здоровья человека и окружающей среды</string>
 	<string name="URL_path_to_the_server">URL путь к серверу</string>
 	<string name="Do_you_really_want_to_delete_all_data_from_the_app">Вы действительно хотите удалить все данные из приложения?</string>
+    <string name="Days_of_synchronization">Дней синхронизации</string>
 
 
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 4efbf52..eda0d0e 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -447,7 +447,7 @@
     <string name="URL_path_to_the_server">URL path to the server</string>
 
     <string name="Do_you_really_want_to_delete_all_data_from_the_app">Do you really want to delete all data from the app?</string>
-
+    <string name="Days_of_synchronization">Days of synchronization</string>
 
 
 </resources>