diff --git a/README.md b/README.md
index 0457846..912762f 100644
--- a/README.md
+++ b/README.md
@@ -34,37 +34,24 @@ Carthage CopyFrameworks (ONLY DEBUG)
 ### Implementation
 
 ```swift
+// MARK: - RIBsTreeViewer
+
 #if DEBUG
 import RIBsTreeViewerClient
-#endif
-
-@UIApplicationMain
-class AppDelegate: UIResponder, UIApplicationDelegate {
-
-    #if DEBUG
-    private var ribsTreeViewer: RIBsTreeViewer?
-    #endif
-
-    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
-        let window = UIWindow(frame: UIScreen.main.bounds)
-        self.window = window
 
-        ... 
+@available(iOS 13.0, *)
+var RIBsTreeViewerHolder: RIBsTreeViewer? = nil
 
-        launchRouter.launch(from: window)
-        #if DEBUG
-        startRIBsTreeViewer(launchRouter: launchRouter)
-        #endif
-        return true
-    }
-
-}
-
-#if DEBUG
 extension AppDelegate {
     private func startRIBsTreeViewer(launchRouter: Routing) {
-        ribsTreeViewer = RIBsTreeViewer.init(router: launchRouter)
-        ribsTreeViewer?.start()
+        if #available(iOS 13.0, *) {
+            RIBsTreeViewerHolder = RIBsTreeViewerImpl.init(router: launchRouter,
+                                                           option: [.webSocketURL: "ws://0.0.0.0:8080",
+                                                                    .monitoringInterval: 1000]])
+            RIBsTreeViewerHolder?.start()
+        } else {
+            DEBUGLOG { "RIBsTreeViewer is not supported OS version." }
+        }
     }
 }
 #endif
@@ -84,17 +71,3 @@ $ yarn install
 $ npx webpack
 $ open ./public/index.html
 ```
-
-## Options
-
-### .webSocketURL
-
-```swift
-        #if DEBUG
-        if #available(iOS 13.0, *) {
-            ribsTreeViewer = RIBsTreeViewerImpl.init(router: launchRouter,
-                                                     option: [.webSocketURL: "ws://0.0.0.0:8080"])
-            ribsTreeViewer?.start()
-        }
-        #endif
-```
diff --git a/RIBsTreeViewerClient.xcodeproj/project.pbxproj b/RIBsTreeViewerClient.xcodeproj/project.pbxproj
index 7ecc1fb..a5fd211 100644
--- a/RIBsTreeViewerClient.xcodeproj/project.pbxproj
+++ b/RIBsTreeViewerClient.xcodeproj/project.pbxproj
@@ -318,7 +318,7 @@
 					"@executable_path/Frameworks",
 					"@loader_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.0.2;
+				MARKETING_VERSION = 1.0.3;
 				PRODUCT_BUNDLE_IDENTIFIER = co.minipro.app.RIBsTreeViewerClient;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
@@ -352,7 +352,7 @@
 					"@executable_path/Frameworks",
 					"@loader_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.0.2;
+				MARKETING_VERSION = 1.0.3;
 				PRODUCT_BUNDLE_IDENTIFIER = co.minipro.app.RIBsTreeViewerClient;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
diff --git a/RIBsTreeViewerClient/Sources/RIBsTreeViewer.swift b/RIBsTreeViewerClient/Sources/RIBsTreeViewer.swift
index 4853f66..9c08574 100644
--- a/RIBsTreeViewerClient/Sources/RIBsTreeViewer.swift
+++ b/RIBsTreeViewerClient/Sources/RIBsTreeViewer.swift
@@ -10,36 +10,50 @@ import Foundation
 import RxSwift
 import RIBs
 
-protocol RIBsTreeViewer {
+public protocol RIBsTreeViewer {
+    init(router: Routing, option: [RIBsTreeViewerOption: Any]?)
     func start()
+    func stop()
 }
 
-public enum RIBsTreeViewerOptions: String {
+public enum RIBsTreeViewerOption {
     case webSocketURL
+    case monitoringInterval
 }
 
 @available(iOS 13.0, *)
-public class RIBsTreeViewerImpl {
+public class RIBsTreeViewerImpl: RIBsTreeViewer {
 
     private let router: Routing
     private let webSocket: WebSocketClient
-    private let disposeBag = DisposeBag()
+    private var watchingDisposable: Disposable?
+    private let option: [RIBsTreeViewerOption: Any]?
 
-    public init(router: Routing, option: [RIBsTreeViewerOptions: String]? = nil) {
-        let url = option?[.webSocketURL]
+    required public init(router: Routing, option: [RIBsTreeViewerOption: Any]?) {
+        self.option = option
         self.router = router
 
-        if let url = url {
-            self.webSocket = WebSocketClient.init(url: URL(string: url)!)
+        let webSocketURL: String
+        if let url = option?[.webSocketURL] as? String {
+            webSocketURL = url
         } else {
-            self.webSocket = WebSocketClient.init(url: URL(string: "ws://0.0.0.0:8080")!)
+            webSocketURL = "ws://0.0.0.0:8080"
         }
+
+        self.webSocket = WebSocketClient.init(url: URL(string: webSocketURL)!)
         self.webSocket.delegate = self
         self.webSocket.connect()
     }
 
     public func start() {
-        Observable<Int>.interval(RxTimeInterval.microseconds(200), scheduler: MainScheduler.instance)
+        let watchingInterval: Int
+        if let interval = option?[.monitoringInterval] as? Int {
+            watchingInterval = interval
+        } else {
+            watchingInterval = 1000
+        }
+
+        watchingDisposable = Observable<Int>.interval(.milliseconds(watchingInterval), scheduler: MainScheduler.instance)
             .map { [unowned self] _ in
                 self.tree(router: self.router)
         }
@@ -52,10 +66,16 @@ public class RIBsTreeViewerImpl {
                 let jsonString = String(bytes: jsonData, encoding: .utf8)!
                 self?.webSocket.send(text: jsonString)
             } catch {
-                // print(error)
+                // TODO: Error Handling
             }
         })
-            .disposed(by: disposeBag)
+
+    }
+
+    public func stop() {
+        watchingDisposable?.dispose()
+        watchingDisposable = nil
+        webSocket.disconnect()
     }
 
     private func tree(router: Routing, appendImage: Bool = false) -> [String: Any] {