diff --git a/BeMe/BeMe.xcodeproj/project.pbxproj b/BeMe/BeMe.xcodeproj/project.pbxproj
index b93aef2..edffacf 100644
--- a/BeMe/BeMe.xcodeproj/project.pbxproj
+++ b/BeMe/BeMe.xcodeproj/project.pbxproj
@@ -110,6 +110,7 @@
 		EC71C83525A5A41800F51FEC /* HomePageDataService.swift in Sources */ = {isa = PBXBuildFile; fileRef = EC71C83425A5A41800F51FEC /* HomePageDataService.swift */; };
 		EC71C84125A5B1BA00F51FEC /* HomeNewQuestionData.swift in Sources */ = {isa = PBXBuildFile; fileRef = EC71C84025A5B1BA00F51FEC /* HomeNewQuestionData.swift */; };
 		EC71C84C25A7769B00F51FEC /* ShittyImageCropVC.swift in Sources */ = {isa = PBXBuildFile; fileRef = EC71C84B25A7769B00F51FEC /* ShittyImageCropVC.swift */; };
+		EC730F7D25D4DECF003E09CC /* AppstoreCheck.swift in Sources */ = {isa = PBXBuildFile; fileRef = EC730F7C25D4DECF003E09CC /* AppstoreCheck.swift */; };
 		EC737F19259D867A0035207F /* CustomTodayCardView.swift in Sources */ = {isa = PBXBuildFile; fileRef = EC737F18259D867A0035207F /* CustomTodayCardView.swift */; };
 		EC737F1C259D8B9E0035207F /* CustomAddCardView.swift in Sources */ = {isa = PBXBuildFile; fileRef = EC737F1B259D8B9E0035207F /* CustomAddCardView.swift */; };
 		EC737F21259DB2C40035207F /* FollowUpperCVC.swift in Sources */ = {isa = PBXBuildFile; fileRef = EC737F20259DB2C40035207F /* FollowUpperCVC.swift */; };
@@ -335,6 +336,7 @@
 		EC71C83425A5A41800F51FEC /* HomePageDataService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HomePageDataService.swift; sourceTree = "<group>"; };
 		EC71C84025A5B1BA00F51FEC /* HomeNewQuestionData.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HomeNewQuestionData.swift; sourceTree = "<group>"; };
 		EC71C84B25A7769B00F51FEC /* ShittyImageCropVC.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ShittyImageCropVC.swift; sourceTree = "<group>"; };
+		EC730F7C25D4DECF003E09CC /* AppstoreCheck.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppstoreCheck.swift; sourceTree = "<group>"; };
 		EC737F18259D867A0035207F /* CustomTodayCardView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CustomTodayCardView.swift; sourceTree = "<group>"; };
 		EC737F1B259D8B9E0035207F /* CustomAddCardView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CustomAddCardView.swift; sourceTree = "<group>"; };
 		EC737F20259DB2C40035207F /* FollowUpperCVC.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FollowUpperCVC.swift; sourceTree = "<group>"; };
@@ -1239,6 +1241,7 @@
 				EC813F2E2599A15200BBCE25 /* LaunchScreen.storyboard */,
 				EC813F312599A15200BBCE25 /* Info.plist */,
 				D41B2D4725C2B7DE007CD08B /* GoogleService-Info.plist */,
+				EC730F7C25D4DECF003E09CC /* AppstoreCheck.swift */,
 			);
 			path = BeMe;
 			sourceTree = "<group>";
@@ -1651,6 +1654,7 @@
 				EC71C84125A5B1BA00F51FEC /* HomeNewQuestionData.swift in Sources */,
 				EC89E32E259C496C00DBAFE5 /* FollowMoreButtonCVC.swift in Sources */,
 				EC89E339259C507300DBAFE5 /* UnderTabBarController.swift in Sources */,
+				EC730F7D25D4DECF003E09CC /* AppstoreCheck.swift in Sources */,
 				D4E07CBC259F22C10075E616 /* DiffThoughtCVC.swift in Sources */,
 				EC89E33F259C5EBB00DBAFE5 /* HomeCardCustomFlowLayout.swift in Sources */,
 				D4344B2925AAC21E002858CF /* Comment.swift in Sources */,
diff --git a/BeMe/BeMe/AppDelegate.swift b/BeMe/BeMe/AppDelegate.swift
index a3405ab..6bd7447 100644
--- a/BeMe/BeMe/AppDelegate.swift
+++ b/BeMe/BeMe/AppDelegate.swift
@@ -13,6 +13,27 @@ import FirebaseRemoteConfig
 @main
 class AppDelegate: UIResponder, UIApplicationDelegate {
 
+    func appUpdate() {
+
+       // id뒤에 값은 앱정보에 Apple ID에 써있는 숫자
+
+       if let url = URL(string: "itms-apps://itunes.apple.com/app/id1548760434"), UIApplication.shared.canOpenURL(url) {
+
+          // 앱스토어로 이동
+
+          if #available(iOS 10.0, *) {
+
+             UIApplication.shared.open(url, options: [:], completionHandler: nil)
+
+          } else {
+
+              UIApplication.shared.openURL(url)
+
+          }
+
+       }
+
+    }
 
 
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
@@ -30,6 +51,26 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
                 print("errrrrrr")
             }
         })
+        
+        _ = try? AppStoreCheck.isUpdateAvailable { (update, error) in
+
+           if let error = error {
+
+              print(error)
+
+           } else if let update = update {
+            
+              if update {
+
+                 self.appUpdate()
+
+                 return
+
+              }
+
+           }
+
+        }
        
         return true
     }
diff --git a/BeMe/BeMe/AppstoreCheck.swift b/BeMe/BeMe/AppstoreCheck.swift
new file mode 100644
index 0000000..b0212ff
--- /dev/null
+++ b/BeMe/BeMe/AppstoreCheck.swift
@@ -0,0 +1,68 @@
+//
+//  AppstoreCheck.swift
+//  BeMe
+//
+//  Created by Yunjae Kim on 2021/02/10.
+//
+
+import Foundation
+
+enum VersionError: Error {
+    case invalidResponse, invalidBundleInfo
+}
+
+
+class AppStoreCheck {
+
+    static func isUpdateAvailable(completion: @escaping (Bool?, Error?) -> Void) throws -> URLSessionDataTask {
+
+        guard let info = Bundle.main.infoDictionary,
+
+            let currentVersion = info["CFBundleShortVersionString"] as? String, // 현재 버전
+
+            let identifier = info["CFBundleIdentifier"] as? String,
+
+            let url = URL(string: "http://itunes.apple.com/kr/lookup?bundleId=\(identifier)") else {
+
+                throw VersionError.invalidBundleInfo
+
+        }
+
+        let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
+
+            do {
+
+                if let error = error { throw error }
+
+                guard let data = data else { throw VersionError.invalidResponse }
+
+                let json = try JSONSerialization.jsonObject(with: data, options: [.allowFragments]) as? [String: Any]
+
+                guard let result = (json?["results"] as? [Any])?.first as? [String: Any], let version = result["version"] as? String else {
+
+                    throw VersionError.invalidResponse
+
+                }
+
+                let verFloat = NSString.init(string: version).floatValue
+
+                let currentVerFloat = NSString.init(string: currentVersion).floatValue
+
+                completion(verFloat > currentVerFloat, nil) // 현재 버전이 앱스토어 버전보다 큰지를 Bool값으로 반환
+
+            } catch {
+
+                completion(nil, error)
+
+            }
+
+        }
+        
+        task.resume()
+
+        return task
+
+    }
+
+}
+