diff --git a/Sources/App/AppDelegate.swift b/Sources/App/AppDelegate.swift
index b4f73fdcb..8e0e35f45 100644
--- a/Sources/App/AppDelegate.swift
+++ b/Sources/App/AppDelegate.swift
@@ -433,6 +433,49 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         }.catch { error in
             Current.Log.error("check error: \(error)")
         }
+
+        showNotificationCategoryAlertIfNeeded()
+    }
+
+    private func showNotificationCategoryAlertIfNeeded() {
+        guard Current.realm().objects(NotificationCategory.self).isEmpty == false else {
+            return
+        }
+
+        let userDefaults = UserDefaults.standard
+        let seenKey = "category-deprecation-2-" + Current.clientVersion().description
+
+        guard !userDefaults.bool(forKey: seenKey) else {
+            return
+        }
+
+        when(fulfilled: Current.apis.map { $0.connection.caches.user.once().promise }).done { [sceneManager] users in
+            guard users.contains(where: \.isAdmin) else {
+                Current.Log.info("not showing because not an admin anywhere")
+                return
+            }
+
+            let alert = UIAlertController(
+                title: L10n.Alerts.Deprecations.NotificationCategory.title,
+                message: L10n.Alerts.Deprecations.NotificationCategory.message("iOS-2021.2"),
+                preferredStyle: .alert
+            )
+            alert.addAction(UIAlertAction(title: L10n.Nfc.List.learnMore, style: .default, handler: { _ in
+                userDefaults.set(true, forKey: seenKey)
+                openURLInBrowser(
+                    URL(string: "https://companion.home-assistant.io/app/ios/actionable-notifications")!,
+                    nil
+                )
+            }))
+            alert.addAction(UIAlertAction(title: L10n.okLabel, style: .cancel, handler: { _ in
+                userDefaults.set(true, forKey: seenKey)
+            }))
+            sceneManager.webViewWindowControllerPromise.done {
+                $0.present(alert)
+            }
+        }.catch { error in
+            Current.Log.error("couldn't check for if user: \(error)")
+        }
     }
 
     func setupWatchCommunicator() {
diff --git a/Sources/App/Resources/en.lproj/Localizable.strings b/Sources/App/Resources/en.lproj/Localizable.strings
index e0b473ca7..fb4c25fd6 100644
--- a/Sources/App/Resources/en.lproj/Localizable.strings
+++ b/Sources/App/Resources/en.lproj/Localizable.strings
@@ -33,6 +33,9 @@
 "alerts.auth_required.title" = "You must sign in to continue";
 "alerts.confirm.cancel" = "Cancel";
 "alerts.confirm.ok" = "OK";
+/* value filled in will be like iOS-2021.2 */
+"alerts.deprecations.notification_category.message" = "You must migrate to actions defined in the notification itself before %1$@.";
+"alerts.deprecations.notification_category.title" = "Notification Categories are deprecated";
 "alerts.open_url_from_deep_link.message" = "Open URL (%@) from deep link?";
 "alerts.open_url_from_notification.message" = "Open URL (%@) found in notification?";
 "alerts.open_url_from_notification.title" = "Open URL?";
@@ -742,4 +745,4 @@ Home Assistant is free and open source home automation software with a focus on
 "widgets.open_page.description" = "Open a frontend page in Home Assistant.";
 "widgets.open_page.not_configured" = "No Pages Available";
 "widgets.open_page.title" = "Open Page";
-"yes_label" = "Yes";
\ No newline at end of file
+"yes_label" = "Yes";
diff --git a/Sources/Shared/Resources/Swiftgen/Strings.swift b/Sources/Shared/Resources/Swiftgen/Strings.swift
index ea8e8c539..05c5aae62 100644
--- a/Sources/Shared/Resources/Swiftgen/Strings.swift
+++ b/Sources/Shared/Resources/Swiftgen/Strings.swift
@@ -180,6 +180,16 @@ public enum L10n {
       /// OK
       public static var ok: String { return L10n.tr("Localizable", "alerts.confirm.ok") }
     }
+    public enum Deprecations {
+      public enum NotificationCategory {
+        /// You must migrate to actions defined in the notification itself before %1$@.
+        public static func message(_ p1: Any) -> String {
+          return L10n.tr("Localizable", "alerts.deprecations.notification_category.message", String(describing: p1))
+        }
+        /// Notification Categories are deprecated
+        public static var title: String { return L10n.tr("Localizable", "alerts.deprecations.notification_category.title") }
+      }
+    }
     public enum OpenUrlFromDeepLink {
       /// Open URL (%@) from deep link?
       public static func message(_ p1: Any) -> String {