diff --git a/apps/mobile/src/Stack.tsx b/apps/mobile/src/Stack.tsx
index 3837e5dde56..78c5f403257 100644
--- a/apps/mobile/src/Stack.tsx
+++ b/apps/mobile/src/Stack.tsx
@@ -14,6 +14,7 @@ import { DynamicColorIOS, Platform, Pressable, ScrollView, StyleSheet } from "re
 import { useResolveClassNames } from "uniwind";
 
 import { AppText as Text } from "./components/AppText";
+import { renderCompactBrandTitle } from "./components/CompactBrandTitle";
 import { ArchivedThreadsRouteScreen } from "./features/archive/ArchivedThreadsRouteScreen";
 import { useAgentNotificationNavigation } from "./features/agent-awareness/notificationNavigation";
 import { ClerkSettingsSheetDetentProvider } from "./features/cloud/ClerkSettingsSheetDetent";
@@ -351,7 +352,8 @@ export const RootStack = createNativeStackNavigator({
         ...GLASS_HEADER_OPTIONS,
         contentStyle: { backgroundColor: "transparent" },
         headerBackVisible: false,
-        title: "Threads",
+        headerTitle: renderCompactBrandTitle,
+        title: "T3 Code",
       },
     }),
     Thread: createNativeStackScreen({
diff --git a/apps/mobile/src/components/CompactBrandTitle.tsx b/apps/mobile/src/components/CompactBrandTitle.tsx
new file mode 100644
index 00000000000..2ecf34aa40c
--- /dev/null
+++ b/apps/mobile/src/components/CompactBrandTitle.tsx
@@ -0,0 +1,60 @@
+import { View } from "react-native";
+
+import { AppText as Text } from "./AppText";
+import { T3Wordmark } from "./T3Wordmark";
+import { useThemeColor } from "../lib/useThemeColor";
+
+/**
+ * Compact brand lockup sized for native navigation bars.
+ */
+export function CompactBrandTitle() {
+  const iconColor = useThemeColor("--color-icon");
+  const mutedColor = useThemeColor("--color-foreground-muted");
+  const subtleColor = useThemeColor("--color-subtle");
+
+  return (
+    <View
+      aria-level={1}
+      accessibilityLabel="T3 Code"
+      accessible
+      role="heading"
+      style={{ alignItems: "center", flexDirection: "row", gap: 6 }}
+    >
+      <T3Wordmark color={iconColor} height={11} />
+      <Text
+        style={{
+          color: mutedColor,
+          fontFamily: "DMSans-Medium",
+          fontSize: 14,
+          letterSpacing: -0.35,
+        }}
+      >
+        Code
+      </Text>
+      <View
+        style={{
+          backgroundColor: subtleColor,
+          borderRadius: 999,
+          paddingHorizontal: 6,
+          paddingVertical: 2,
+        }}
+      >
+        <Text
+          style={{
+            color: mutedColor,
+            fontFamily: "DMSans-Bold",
+            fontSize: 9,
+            letterSpacing: 0.9,
+            textTransform: "uppercase",
+          }}
+        >
+          Alpha
+        </Text>
+      </View>
+    </View>
+  );
+}
+
+export function renderCompactBrandTitle() {
+  return <CompactBrandTitle />;
+}
diff --git a/apps/mobile/src/features/home/HomeRouteScreen.tsx b/apps/mobile/src/features/home/HomeRouteScreen.tsx
index 49cf06d85ec..cd9467c774e 100644
--- a/apps/mobile/src/features/home/HomeRouteScreen.tsx
+++ b/apps/mobile/src/features/home/HomeRouteScreen.tsx
@@ -4,6 +4,7 @@ import { useNavigation } from "@react-navigation/native";
 import { useMemo, useState } from "react";
 
 import { NativeHeaderToolbar, NativeStackScreenOptions } from "../../native/StackHeader";
+import { renderCompactBrandTitle } from "../../components/CompactBrandTitle";
 import { useProjects, useThreadShells } from "../../state/entities";
 import { usePendingNewTasks } from "../../state/use-pending-new-tasks";
 import { useWorkspaceState } from "../../state/workspace";
@@ -86,7 +87,9 @@ export function HomeRouteScreen() {
     >
       <>
         {/* Restore the compact title in case the split branch blanked it. */}
-        <NativeStackScreenOptions options={{ title: "Threads", headerTitle: "Threads" }} />
+        <NativeStackScreenOptions
+          options={{ title: "T3 Code", headerTitle: renderCompactBrandTitle }}
+        />
         <HomeHeader
           environments={environments}
           searchQuery={searchQuery}
diff --git a/apps/mobile/src/features/threads/sidebar-navigation-shell.tsx b/apps/mobile/src/features/threads/sidebar-navigation-shell.tsx
index f1e06926d0b..a94c033fa4d 100644
--- a/apps/mobile/src/features/threads/sidebar-navigation-shell.tsx
+++ b/apps/mobile/src/features/threads/sidebar-navigation-shell.tsx
@@ -11,6 +11,7 @@ import {
 import type { ReactNode } from "react";
 import { Platform, useColorScheme } from "react-native";
 
+import { renderCompactBrandTitle } from "../../components/CompactBrandTitle";
 import { nativeHeaderScrollEdgeEffects } from "../../native/StackHeader";
 
 const SCROLL_EDGE_EFFECTS = nativeHeaderScrollEdgeEffects(Platform.OS, Platform.Version);
@@ -34,10 +35,11 @@ const SIDEBAR_SCREEN_OPTIONS: SidebarScreenOptions = {
   headerShadowVisible: false,
   headerShown: true,
   headerStyle: { backgroundColor: "transparent" },
+  headerTitle: renderCompactBrandTitle,
   headerTitleStyle: { fontSize: 18, fontWeight: "800" },
   headerTransparent: true,
   scrollEdgeEffects: SCROLL_EDGE_EFFECTS,
-  title: "Threads",
+  title: "T3 Code",
   unstable_navigationItemStyle: "editor",
 };