diff --git a/KDChat/AppInfo.swift b/KDChat/AppInfo.swift
index d52c6e8..e1219bb 100644
--- a/KDChat/AppInfo.swift
+++ b/KDChat/AppInfo.swift
@@ -4,4 +4,33 @@ enum AppInfo {
     static let name = Bundle.main.object(forInfoDictionaryKey: "CFBundleName") as? String ?? "KDChat"
     static let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String ?? "–"
     static let build = Bundle.main.object(forInfoDictionaryKey: "CFBundleVersion") as? String ?? "–"
+    static let distribution = AppDistribution.current
+    static let testFlightURL: URL? = nil // TODO: set when TestFlight is configured
+}
+
+enum AppDistribution: String {
+    case development = "Development"
+    case simulator = "Simulator"
+    case testFlight = "TestFlight"
+    case appStore = "App Store"
+    case adHoc = "Ad Hoc"
+
+    static var current: AppDistribution {
+        #if targetEnvironment(simulator)
+        return .simulator
+        #else
+        #if DEBUG
+        return .development
+        #else
+        if let receiptURL = Bundle.main.appStoreReceiptURL,
+           receiptURL.lastPathComponent == "sandboxReceipt" {
+            return .testFlight
+        }
+        if Bundle.main.path(forResource: "embedded", ofType: "mobileprovision") != nil {
+            return .adHoc
+        }
+        return .appStore
+        #endif
+        #endif
+    }
 }
diff --git a/KDChat/Networking/ProtocolTypes.swift b/KDChat/Networking/ProtocolTypes.swift
index ea37244..74dc91e 100644
--- a/KDChat/Networking/ProtocolTypes.swift
+++ b/KDChat/Networking/ProtocolTypes.swift
@@ -12,8 +12,8 @@ enum ServerMethod: Int32 {
     case leaveGame = 5
     // 6 = TimeSync, 7 = RequestProfile
     case directMessage = 8
-    // 9..19 = game-specific methods
-    case remoteFormEvent = 20
+    // 9..20 = game-specific methods
+    case remoteFormEvent = 21
 }
 
 // MARK: - Client Methods (server -> client)
diff --git a/KDChat/Views/SettingsView.swift b/KDChat/Views/SettingsView.swift
index 660002e..9048947 100644
--- a/KDChat/Views/SettingsView.swift
+++ b/KDChat/Views/SettingsView.swift
@@ -115,7 +115,7 @@ struct SettingsView: View {
             }
 
             Section {
-                Text("\(AppInfo.name) \(AppInfo.version) (\(AppInfo.build))")
+                Text("\(AppInfo.name) \(AppInfo.version) (\(AppInfo.build)) \(AppInfo.distribution.rawValue)")
                     .foregroundStyle(.secondary)
                     .frame(maxWidth: .infinity, alignment: .center)
             }