diff --git a/app/android/app/src/main/kotlin/com/iHTCboy/iPomodoro/DeviceUtils.kt b/app/android/app/src/main/kotlin/com/iHTCboy/iPomodoro/DeviceUtils.kt
new file mode 100644
index 0000000..9552f3a
--- /dev/null
+++ b/app/android/app/src/main/kotlin/com/iHTCboy/iPomodoro/DeviceUtils.kt
@@ -0,0 +1,33 @@
+package com.iHTCboy.iPomodoro
+import android.os.Build
+import java.lang.reflect.Method
+
+object DeviceUtils {
+    //emuiApiLevel>0 即华为系统
+    //判断是否是华为系统 官网提供
+    val isEMUI: Boolean
+        get() {
+            //emuiApiLevel>0 即华为系统
+            var emuiApiLevel: Int = 0
+            try {
+                val cls = Class.forName("android.os.SystemProperties")
+                val method: Method = cls.getDeclaredMethod("get", *arrayOf<Class<*>>(String::class.java))
+                emuiApiLevel = (method.invoke(cls, arrayOf<Any>("ro.build.hw_emui_api_level")) as String).toInt()
+            } catch (e: Exception) {
+                e.printStackTrace()
+            }
+            return emuiApiLevel > 0
+        }//这个字符串可以自己定义,例如判断华为就填写huawei,魅族就填写meizu
+
+    //判官是否是小米系统 官网提供
+    val isMIUI: Boolean
+        get() {
+            val manufacturer: String = Build.MANUFACTURER
+            //这个字符串可以自己定义,例如判断华为就填写huawei,魅族就填写meizu
+            if ("xiaomi".equals(manufacturer, ignoreCase = true)) {
+                return true
+            }
+            return false
+        }
+}
+
diff --git a/app/android/app/src/main/kotlin/com/iHTCboy/iPomodoro/MainActivity.kt b/app/android/app/src/main/kotlin/com/iHTCboy/iPomodoro/MainActivity.kt
index 44211f5..485e189 100644
--- a/app/android/app/src/main/kotlin/com/iHTCboy/iPomodoro/MainActivity.kt
+++ b/app/android/app/src/main/kotlin/com/iHTCboy/iPomodoro/MainActivity.kt
@@ -158,6 +158,20 @@ class MainActivity : FlutterActivity() {
                 val intent = Intent(this, AppWebviewAvtivity::class.java)
                 startActivity(intent)
             }
+
+            if ("device_type" == call.method) {
+                if (DeviceUtils.isEMUI) {
+                    result.success("hw")
+                    return@setMethodCallHandler
+                }
+
+                if (DeviceUtils.isMIUI) {
+                    result.success("xm")
+                    return@setMethodCallHandler
+                }
+
+                result.success("success")
+            }
         }
 
     }
@@ -188,13 +202,13 @@ class MainActivity : FlutterActivity() {
 
     private fun changeSystemBrightness(brightness: Float) {
         if (hasPermissionsToWriteSettings(this)) {
-            println("已获取权限")
+            //println("已获取权限")
             val lp = window.attributes
             lp.screenBrightness = brightness
             window.attributes = lp
         } else {
             //shortToast("你拒绝了权限")
-            println("你拒绝了权限")
+            //println("你拒绝了权限")
             val msg = "更改屏幕亮度，需要先允许修改系统亮度权限，是否允许？"
             AlertDialog.Builder(this, R.style.DialogTheme)
                     .setMessage(msg)
diff --git a/app/assets/musics/cowbell.caf b/app/assets/musics/cowbell.caf
new file mode 100644
index 0000000..5e3456a
Binary files /dev/null and b/app/assets/musics/cowbell.caf differ
diff --git a/app/ios/Flutter/flutter_export_environment.sh b/app/ios/Flutter/flutter_export_environment.sh
index 465e83c..3704923 100755
--- a/app/ios/Flutter/flutter_export_environment.sh
+++ b/app/ios/Flutter/flutter_export_environment.sh
@@ -5,8 +5,8 @@ export "FLUTTER_APPLICATION_PATH=/Users/HTC/Documents/Programing/Flutter/iPomodo
 export "FLUTTER_TARGET=/Users/HTC/Documents/Programing/Flutter/iPomodoro-Flutter/app/lib/main.dart"
 export "FLUTTER_BUILD_DIR=build"
 export "SYMROOT=${SOURCE_ROOT}/../build/ios"
-export "FLUTTER_BUILD_NAME=1.3.2"
-export "FLUTTER_BUILD_NUMBER=210306"
+export "FLUTTER_BUILD_NAME=2.0.0"
+export "FLUTTER_BUILD_NUMBER=210307"
 export "DART_DEFINES=Zmx1dHRlci5pbnNwZWN0b3Iuc3RydWN0dXJlZEVycm9ycz10cnVl,RkxVVFRFUl9XRUJfQVVUT19ERVRFQ1Q9dHJ1ZQ=="
 export "DART_OBFUSCATION=false"
 export "TRACK_WIDGET_CREATION=true"
diff --git a/app/ios/Runner.xcodeproj/project.pbxproj b/app/ios/Runner.xcodeproj/project.pbxproj
index e7e8a3b..287a0f3 100644
--- a/app/ios/Runner.xcodeproj/project.pbxproj
+++ b/app/ios/Runner.xcodeproj/project.pbxproj
@@ -464,7 +464,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
-				CURRENT_PROJECT_VERSION = 2021.03.05;
+				CURRENT_PROJECT_VERSION = 2021.03.07;
 				DEVELOPMENT_TEAM = 28PV6G96R7;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -480,7 +480,7 @@
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				);
-				MARKETING_VERSION = 1.3.2;
+				MARKETING_VERSION = 2.0.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.iHTCboy.iPomodoro;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
@@ -606,7 +606,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
-				CURRENT_PROJECT_VERSION = 2021.03.05;
+				CURRENT_PROJECT_VERSION = 2021.03.07;
 				DEVELOPMENT_TEAM = 28PV6G96R7;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -622,7 +622,7 @@
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				);
-				MARKETING_VERSION = 1.3.2;
+				MARKETING_VERSION = 2.0.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.iHTCboy.iPomodoro;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
@@ -640,7 +640,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = Runner/Runner.entitlements;
-				CURRENT_PROJECT_VERSION = 2021.03.05;
+				CURRENT_PROJECT_VERSION = 2021.03.07;
 				DEVELOPMENT_TEAM = 28PV6G96R7;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
@@ -656,7 +656,7 @@
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				);
-				MARKETING_VERSION = 1.3.2;
+				MARKETING_VERSION = 2.0.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.iHTCboy.iPomodoro;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
diff --git a/app/lib/common/utils/config_storage.dart b/app/lib/common/utils/config_storage.dart
index 6d62b3c..ee4b1ee 100644
--- a/app/lib/common/utils/config_storage.dart
+++ b/app/lib/common/utils/config_storage.dart
@@ -13,6 +13,7 @@ class AppStorage {
   static const String K_STRING_POMODORO_NOTIFICATION = "k_string_pomodoro_notification";
   static const String K_STRING_TIMERT_NOTIFICATION = "k_string_timer_notification";
   static const String K_STRING_LANGUAGE_SETTINGS = "k_string_language_settings";
+  static const String K_STRING_PRIVACY_SHOW_TIPS = "k_string_privacy_show_tips";
 
 
   static Future<bool> setInt(String key, int value) async {
diff --git a/app/lib/generated/intl/messages_en.dart b/app/lib/generated/intl/messages_en.dart
index 209ca12..a9ad07c 100644
--- a/app/lib/generated/intl/messages_en.dart
+++ b/app/lib/generated/intl/messages_en.dart
@@ -35,7 +35,7 @@ class MessageLookup extends MessageLookupByLibrary {
 
   static m7(AppName) => "Welcome to rate ${AppName}!";
 
-  static m8(AppName) => "Welcome write review for ${AppName}!";
+  static m8(AppName) => "Write a review ${AppName}";
 
   static m9(AppStoreUrl) => "Hello, iPomodoro! This is a Pomodoro time management and planning App, no longer distracted! No more delay! Efficient! Focus! A good tool for learning! iOS download: ${AppStoreUrl}，Android download：Google Play Store";
 
@@ -77,16 +77,19 @@ class MessageLookup extends MessageLookupByLibrary {
     "pomodoro_time" : MessageLookupByLibrary.simpleMessage("🍅 Pomodoro learning"),
     "pomodoro_times" : m6,
     "pomodoro_yes" : MessageLookupByLibrary.simpleMessage("Yes(😭)"),
+    "privacy_policy_agree" : MessageLookupByLibrary.simpleMessage("Agree"),
+    "privacy_policy_show" : MessageLookupByLibrary.simpleMessage("Privacy Agreement"),
+    "privacy_policy_tips" : MessageLookupByLibrary.simpleMessage("You need to agree to the user privacy policy agreement to use this application, click \'agree\', to continue using, if you do not agree, please exit the application."),
     "set_app_review" : MessageLookupByLibrary.simpleMessage("In-app review"),
     "set_app_review_desc" : m7,
     "set_appstore_review" : MessageLookupByLibrary.simpleMessage("Store to review"),
     "set_appstore_review_desc" : m8,
     "set_email_connect" : MessageLookupByLibrary.simpleMessage("Email"),
-    "set_email_connect_desc" : MessageLookupByLibrary.simpleMessage("Any questions, please write to us"),
+    "set_email_connect_desc" : MessageLookupByLibrary.simpleMessage("Any questions, please to us"),
     "set_feedback" : MessageLookupByLibrary.simpleMessage("Feedback"),
     "set_feedback_desc" : MessageLookupByLibrary.simpleMessage("Needs or bugs are welcome"),
     "set_focus" : MessageLookupByLibrary.simpleMessage("Focus more"),
-    "set_focus_desc" : MessageLookupByLibrary.simpleMessage("Welcome to the author\'s blog"),
+    "set_focus_desc" : MessageLookupByLibrary.simpleMessage("Welcome to author\'s blog"),
     "set_localizetion" : MessageLookupByLibrary.simpleMessage("Set Language"),
     "set_localizetion_desc" : MessageLookupByLibrary.simpleMessage("Change app language"),
     "set_open_source" : MessageLookupByLibrary.simpleMessage("Open source"),
@@ -96,7 +99,7 @@ class MessageLookup extends MessageLookupByLibrary {
     "set_recommend" : MessageLookupByLibrary.simpleMessage("More"),
     "set_recommend_desc" : MessageLookupByLibrary.simpleMessage("More developer recommendations"),
     "set_screen_brightness" : MessageLookupByLibrary.simpleMessage("Set brightness"),
-    "set_screen_brightness_desc" : MessageLookupByLibrary.simpleMessage("In order to save power during app"),
+    "set_screen_brightness_desc" : MessageLookupByLibrary.simpleMessage("In order to save power"),
     "set_share_friend" : MessageLookupByLibrary.simpleMessage("Share"),
     "set_share_friend_desc" : MessageLookupByLibrary.simpleMessage("Learn with friends around you!"),
     "start_button" : MessageLookupByLibrary.simpleMessage("start"),
diff --git a/app/lib/generated/intl/messages_zh.dart b/app/lib/generated/intl/messages_zh.dart
index db27053..2b88674 100644
--- a/app/lib/generated/intl/messages_zh.dart
+++ b/app/lib/generated/intl/messages_zh.dart
@@ -77,6 +77,9 @@ class MessageLookup extends MessageLookupByLibrary {
     "pomodoro_time" : MessageLookupByLibrary.simpleMessage("🍅 番茄学习"),
     "pomodoro_times" : m6,
     "pomodoro_yes" : MessageLookupByLibrary.simpleMessage("是(😭)"),
+    "privacy_policy_agree" : MessageLookupByLibrary.simpleMessage("同意"),
+    "privacy_policy_show" : MessageLookupByLibrary.simpleMessage("隐私协议"),
+    "privacy_policy_tips" : MessageLookupByLibrary.simpleMessage("使用本应用需要同意用户隐私政策协议，点击“同意”继续使用，不同意请退出应用。"),
     "set_app_review" : MessageLookupByLibrary.simpleMessage("应用内评分"),
     "set_app_review_desc" : m7,
     "set_appstore_review" : MessageLookupByLibrary.simpleMessage("去商店评分"),
diff --git a/app/lib/generated/l10n.dart b/app/lib/generated/l10n.dart
index b8fb8fc..bd31773 100644
--- a/app/lib/generated/l10n.dart
+++ b/app/lib/generated/l10n.dart
@@ -885,10 +885,10 @@ class S {
     );
   }
 
-  /// `In order to save power during app`
+  /// `In order to save power`
   String get set_screen_brightness_desc {
     return Intl.message(
-      'In order to save power during app',
+      'In order to save power',
       name: 'set_screen_brightness_desc',
       desc: '',
       args: [],
@@ -925,10 +925,10 @@ class S {
     );
   }
 
-  /// `Welcome write review for {AppName}!`
+  /// `Write a review {AppName}`
   String set_appstore_review_desc(Object AppName) {
     return Intl.message(
-      'Welcome write review for $AppName!',
+      'Write a review $AppName',
       name: 'set_appstore_review_desc',
       desc: '',
       args: [AppName],
@@ -985,10 +985,10 @@ class S {
     );
   }
 
-  /// `Any questions, please write to us`
+  /// `Any questions, please to us`
   String get set_email_connect_desc {
     return Intl.message(
-      'Any questions, please write to us',
+      'Any questions, please to us',
       name: 'set_email_connect_desc',
       desc: '',
       args: [],
@@ -1045,10 +1045,10 @@ class S {
     );
   }
 
-  /// `Welcome to the author's blog`
+  /// `Welcome to author's blog`
   String get set_focus_desc {
     return Intl.message(
-      'Welcome to the author\'s blog',
+      'Welcome to author\'s blog',
       name: 'set_focus_desc',
       desc: '',
       args: [],
@@ -1094,6 +1094,36 @@ class S {
       args: [],
     );
   }
+
+  /// `You need to agree to the user privacy policy agreement to use this application, click 'agree', to continue using, if you do not agree, please exit the application.`
+  String get privacy_policy_tips {
+    return Intl.message(
+      'You need to agree to the user privacy policy agreement to use this application, click \'agree\', to continue using, if you do not agree, please exit the application.',
+      name: 'privacy_policy_tips',
+      desc: '',
+      args: [],
+    );
+  }
+
+  /// `Agree`
+  String get privacy_policy_agree {
+    return Intl.message(
+      'Agree',
+      name: 'privacy_policy_agree',
+      desc: '',
+      args: [],
+    );
+  }
+
+  /// `Privacy Agreement`
+  String get privacy_policy_show {
+    return Intl.message(
+      'Privacy Agreement',
+      name: 'privacy_policy_show',
+      desc: '',
+      args: [],
+    );
+  }
 }
 
 class AppLocalizationDelegate extends LocalizationsDelegate<S> {
diff --git a/app/lib/l10n/intl_en.arb b/app/lib/l10n/intl_en.arb
index da218c1..f87f643 100644
--- a/app/lib/l10n/intl_en.arb
+++ b/app/lib/l10n/intl_en.arb
@@ -84,25 +84,28 @@
   "tips_confirm": "Confirm",
   "tips_select_time": "To choose time",
   "set_screen_brightness": "Set brightness",
-  "set_screen_brightness_desc": "In order to save power during app",
+  "set_screen_brightness_desc": "In order to save power",
   "set_app_review": "In-app review",
   "set_app_review_desc": "Welcome to rate {AppName}!",
   "set_appstore_review": "Store to review",
-  "set_appstore_review_desc": "Welcome write review for {AppName}!",
+  "set_appstore_review_desc": "Write a review {AppName}",
   "set_share_friend": "Share",
   "set_share_friend_desc": "Learn with friends around you!",
   "set_feedback": "Feedback",
   "set_feedback_desc": "Needs or bugs are welcome",
   "set_email_connect": "Email",
-  "set_email_connect_desc": "Any questions, please write to us",
+  "set_email_connect_desc": "Any questions, please to us",
   "set_privacy_policy": "Privacy Policy",
   "set_privacy_policy_desc": "User Use Service Agreement",
   "set_open_source": "Open source",
   "set_open_source_desc": "Open source, welcome to follow",
   "set_focus": "Focus more",
-  "set_focus_desc": "Welcome to the author's blog",
+  "set_focus_desc": "Welcome to author's blog",
   "set_recommend": "More",
   "set_recommend_desc": "More developer recommendations",
   "set_localizetion": "Set Language",
-  "set_localizetion_desc": "Change app language"
+  "set_localizetion_desc": "Change app language",
+  "privacy_policy_tips": "You need to agree to the user privacy policy agreement to use this application, click 'agree', to continue using, if you do not agree, please exit the application.",
+  "privacy_policy_agree": "Agree",
+  "privacy_policy_show": "Privacy Agreement"
 }
\ No newline at end of file
diff --git a/app/lib/l10n/intl_zh.arb b/app/lib/l10n/intl_zh.arb
index ebcc28c..39f9d17 100644
--- a/app/lib/l10n/intl_zh.arb
+++ b/app/lib/l10n/intl_zh.arb
@@ -104,5 +104,8 @@
   "set_recommend": "更多推荐",
   "set_recommend_desc": "更多开发者内容推荐",
   "set_localizetion": "设置显示语言",
-  "set_localizetion_desc": "更改App的语言"
+  "set_localizetion_desc": "更改App的语言",
+  "privacy_policy_tips": "使用本应用需要同意用户隐私政策协议，点击“同意”继续使用，不同意请退出应用。",
+  "privacy_policy_agree": "同意",
+  "privacy_policy_show": "隐私协议"
 }
\ No newline at end of file
diff --git a/app/lib/ui/page/pomodoro_page.dart b/app/lib/ui/page/pomodoro_page.dart
index 64dc39b..7f01bb5 100644
--- a/app/lib/ui/page/pomodoro_page.dart
+++ b/app/lib/ui/page/pomodoro_page.dart
@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:io';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -55,6 +56,7 @@ class _PomodoroPageState extends State<PomodoroPage> with WidgetsBindingObserver
       _show_tpis = false;
       WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
         showTips();
+        // show_privacy_policy();
       });
     };
   }
@@ -425,6 +427,23 @@ class _PomodoroPageState extends State<PomodoroPage> with WidgetsBindingObserver
       }
     });
   }
+  
+  void show_privacy_policy() {
+    if(Platform.isAndroid) {
+      AppStorage.getInt(AppStorage.K_STRING_PRIVACY_SHOW_TIPS).then((value) {
+        if (value == null) {
+          AlertView.show(context, S.of(context).tips_text, S.of(context).privacy_policy_tips,
+              confirmText: S.of(context).privacy_policy_agree, cancelText: S.of(context).privacy_policy_show, cancelTextColor: Colors.green).then((bool isOK) {
+            //save status
+            AppStorage.setInt(AppStorage.K_STRING_PRIVACY_SHOW_TIPS, 1);
+            if(!isOK) {
+              NativeChannel.invokeMethod('privacy_policy');
+            }
+          });
+        }
+      });
+    }
+  }
 
 }
 
diff --git a/app/pubspec.yaml b/app/pubspec.yaml
index 6d036e7..b9e10f4 100644
--- a/app/pubspec.yaml
+++ b/app/pubspec.yaml
@@ -15,7 +15,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
 # Read more about iOS versioning at
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
-version: 1.3.2+210306
+version: 2.1.1+210310
 
 environment:
   sdk: ">=2.7.0 <3.0.0"
@@ -52,6 +52,7 @@ flutter:
   # To add assets to your application, add an assets section, like this:
   assets:
     - assets/images/
+    - assets/musics/
   #   - images/a_dot_burr.jpeg
   #   - images/a_dot_ham.jpeg
   # An image asset can refer to one or more resolution-specific "variants", see