diff --git a/ClaudeChecker/ContentView.swift b/ClaudeChecker/ContentView.swift
index 2c7f764..fd75fae 100644
--- a/ClaudeChecker/ContentView.swift
+++ b/ClaudeChecker/ContentView.swift
@@ -591,25 +591,48 @@ struct SettingsView: View {
                 .font(.system(size: 16, weight: .semibold))
 
             // Auth section
-            VStack(alignment: .leading, spacing: 6) {
+            VStack(alignment: .leading, spacing: 8) {
                 Label("Authentication", systemImage: "person.crop.circle")
                     .font(.system(size: 12, weight: .medium))
                     .foregroundColor(.secondary)
 
-                Text("ClaudeChecker signs into claude.ai inside a built-in browser window and reads your quota data directly from the API. Your session is stored locally and persists across restarts.")
+                HStack(spacing: 6) {
+                    Circle()
+                        .fill(vm.isSignedIn ? Color.green : Color.orange)
+                        .frame(width: 7, height: 7)
+                    Text(vm.isSignedIn ? "Signed in to claude.ai" : "Not signed in")
+                        .font(.system(size: 12, weight: .medium))
+                        .foregroundColor(vm.isSignedIn ? .primary : .orange)
+                }
+
+                Text("Your session is stored locally and persists across restarts.")
                     .font(.system(size: 11.5))
                     .foregroundColor(.secondary)
                     .fixedSize(horizontal: false, vertical: true)
 
-                Button(action: {
-                    showSettings = false
-                    vm.triggerLogin = true
-                }) {
-                    Label("Sign in again", systemImage: "arrow.right.circle")
-                        .font(.system(size: 12))
+                HStack(spacing: 8) {
+                    Button(action: {
+                        showSettings = false
+                        vm.triggerLogin = true
+                    }) {
+                        Label(vm.isSignedIn ? "Re-authenticate" : "Sign in", systemImage: "arrow.right.circle")
+                            .font(.system(size: 12))
+                    }
+                    .buttonStyle(.bordered)
+                    .controlSize(.small)
+
+                    if vm.isSignedIn {
+                        Button(action: {
+                            Task { await vm.signOut() }
+                        }) {
+                            Label("Sign out", systemImage: "rectangle.portrait.and.arrow.right")
+                                .font(.system(size: 12))
+                        }
+                        .buttonStyle(.bordered)
+                        .controlSize(.small)
+                        .tint(.red)
+                    }
                 }
-                .buttonStyle(.bordered)
-                .controlSize(.small)
             }
 
             Divider()
diff --git a/ClaudeChecker/Info.plist b/ClaudeChecker/Info.plist
index e25d27c..ba1ad04 100644
--- a/ClaudeChecker/Info.plist
+++ b/ClaudeChecker/Info.plist
@@ -15,9 +15,9 @@
     <key>CFBundlePackageType</key>
     <string>APPL</string>
     <key>CFBundleShortVersionString</key>
-    <string>2.0.5</string>
+    <string>2.0.6</string>
     <key>CFBundleVersion</key>
-    <string>12</string>
+    <string>13</string>
     <key>LSMinimumSystemVersion</key>
     <string>13.0</string>
     <key>LSUIElement</key>
diff --git a/ClaudeChecker/UsageViewModel.swift b/ClaudeChecker/UsageViewModel.swift
index 60c17f3..3f1cea4 100644
--- a/ClaudeChecker/UsageViewModel.swift
+++ b/ClaudeChecker/UsageViewModel.swift
@@ -13,6 +13,7 @@ class UsageViewModel: ObservableObject {
     @Published var overageSpendLimit: OverageSpendLimit?
     @Published var planLabel: String = "Claude"
     @Published var isNotAuthenticated: Bool = false
+    @Published var isSignedIn: Bool = false
     @Published var triggerLogin: Bool = false
     @Published var showInMenuBar: Bool = true {
         didSet { UserDefaults.standard.set(showInMenuBar, forKey: "show_in_menubar") }
@@ -36,6 +37,21 @@ class UsageViewModel: ObservableObject {
         loadPlaceholderData()
     }
 
+    func signOut() async {
+        let store = WKWebsiteDataStore.default()
+        let types = WKWebsiteDataStore.allWebsiteDataTypes()
+        let records = await store.dataRecords(ofTypes: types)
+        let claudeRecords = records.filter { $0.displayName.contains("claude.ai") }
+        await store.removeData(ofTypes: types, for: claudeRecords)
+        isSignedIn = false
+        isNotAuthenticated = true
+        lastUpdated = nil
+        limits = []
+        extraUsage = nil
+        prepaidCredits = nil
+        overageSpendLimit = nil
+    }
+
     func refresh() async {
         isLoading = true
         errorMessage = nil
@@ -54,6 +70,7 @@ class UsageViewModel: ObservableObject {
             overageSpendLimit = overage
             planLabel = "Pro"
             lastUpdated = Date()
+            isSignedIn = true
 
             for i in limits.indices {
                 let key = limits[i].window.rawValue
diff --git a/README.md b/README.md
index 4305a63..ea6b01a 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@
 
 [![macOS](https://img.shields.io/badge/macOS-13.0+-000000?style=flat&logo=apple&logoColor=white)](https://www.apple.com/macos/)
 [![Swift](https://img.shields.io/badge/Swift-5.9-F05138?style=flat&logo=swift&logoColor=white)](https://swift.org)
-[![Version](https://img.shields.io/badge/version-2.0.5-orange?style=flat)](https://github.com/superdooper86/claudechecker/releases)
+[![Version](https://img.shields.io/badge/version-2.0.6-orange?style=flat)](https://github.com/superdooper86/claudechecker/releases)
 [![License](https://img.shields.io/badge/license-MIT-blue?style=flat)](LICENSE)
 
 </div>
diff --git a/version.json b/version.json
index e7b0458..702782c 100644
--- a/version.json
+++ b/version.json
@@ -1,5 +1,5 @@
 {
-  "version": "2.0.5",
-  "url": "https://github.com/superdooper86/claudechecker/releases/download/v2.0.5/ClaudeChecker.zip",
-  "notes": "Fixed window size and update banner dismiss."
+  "version": "2.0.6",
+  "url": "https://github.com/superdooper86/claudechecker/releases/download/v2.0.6/ClaudeChecker.zip",
+  "notes": "Authentication section shows sign-in status with re-authenticate and sign out options."
 }