diff --git a/apps/web/app/layout.tsx b/apps/web/app/layout.tsx
index 780ad64d..1daeebea 100644
--- a/apps/web/app/layout.tsx
+++ b/apps/web/app/layout.tsx
@@ -10,6 +10,7 @@ import { AppSidebar } from "@multica/ui/components/app-sidebar";
 import { ThemeProvider } from "@multica/ui/components/theme-provider";
 import { Toaster } from "@multica/ui/components/ui/sonner";
 import { HubSidebar } from "@multica/ui/components/hub-sidebar";
+import { ServiceWorkerRegister } from "./sw-register";
 
 const gatewayUrl = process.env.NEXT_PUBLIC_GATEWAY_URL;
 if (gatewayUrl) {
@@ -37,6 +38,14 @@ const playfair = Playfair_Display({
 export const metadata: Metadata = {
   title: "Multica",
   description: "Distributed AI agent framework",
+  appleWebApp: {
+    capable: true,
+    statusBarStyle: "black-translucent",
+    title: "Multica",
+  },
+  icons: {
+    apple: "/icon-192x192.png",
+  },
 };
 
 export default function RootLayout({
@@ -65,6 +74,7 @@ export default function RootLayout({
           </SidebarProvider>
         </ThemeProvider>
         <Toaster />
+        <ServiceWorkerRegister />
       </body>
     </html>
   );
diff --git a/apps/web/app/manifest.ts b/apps/web/app/manifest.ts
new file mode 100644
index 00000000..48707b84
--- /dev/null
+++ b/apps/web/app/manifest.ts
@@ -0,0 +1,35 @@
+import type { MetadataRoute } from "next";
+
+export default function manifest(): MetadataRoute.Manifest {
+  return {
+    name: "Multica",
+    short_name: "Multica",
+    description: "Distributed AI agent framework",
+    id: "/",
+    scope: "/",
+    start_url: "/",
+    display: "standalone",
+    orientation: "any",
+    background_color: "#09090b",
+    theme_color: "#09090b",
+    icons: [
+      {
+        src: "/icon-192x192.png",
+        sizes: "192x192",
+        type: "image/png",
+      },
+      {
+        src: "/icon-512x512.png",
+        sizes: "512x512",
+        type: "image/png",
+        purpose: "any",
+      },
+      {
+        src: "/icon-512x512.png",
+        sizes: "512x512",
+        type: "image/png",
+        purpose: "maskable",
+      },
+    ],
+  };
+}
diff --git a/apps/web/app/sw-register.tsx b/apps/web/app/sw-register.tsx
new file mode 100644
index 00000000..e49ec296
--- /dev/null
+++ b/apps/web/app/sw-register.tsx
@@ -0,0 +1,22 @@
+"use client";
+
+import { useEffect } from "react";
+
+export function ServiceWorkerRegister() {
+  useEffect(() => {
+    if ("serviceWorker" in navigator) {
+      navigator.serviceWorker
+        .register("/sw.js", {
+          scope: "/",
+          updateViaCache: "none",
+        })
+        .catch((err) => {
+          if (process.env.NODE_ENV === "development") {
+            console.warn("SW registration failed:", err);
+          }
+        });
+    }
+  }, []);
+
+  return null;
+}
diff --git a/apps/web/app/~offline/page.tsx b/apps/web/app/~offline/page.tsx
new file mode 100644
index 00000000..122a1eda
--- /dev/null
+++ b/apps/web/app/~offline/page.tsx
@@ -0,0 +1,22 @@
+export default function OfflinePage() {
+  return (
+    <div
+      className="flex h-dvh w-full items-center justify-center"
+      style={{ display: "flex", height: "100dvh", width: "100%", alignItems: "center", justifyContent: "center" }}
+    >
+      <div
+        className="flex flex-col items-center gap-4 text-center"
+        style={{ display: "flex", flexDirection: "column", alignItems: "center", gap: "1rem", textAlign: "center" }}
+      >
+        <div className="text-4xl" style={{ fontSize: "2.25rem" }}>*</div>
+        <h1 className="text-xl font-semibold" style={{ fontSize: "1.25rem", fontWeight: 600 }}>
+          You are offline
+        </h1>
+        <p className="text-sm text-muted-foreground" style={{ fontSize: "0.875rem", color: "#a1a1aa" }}>
+          Multica requires an internet connection. Please check your network and
+          try again.
+        </p>
+      </div>
+    </div>
+  );
+}
diff --git a/apps/web/next.config.ts b/apps/web/next.config.ts
index 1e258c7f..7793796a 100644
--- a/apps/web/next.config.ts
+++ b/apps/web/next.config.ts
@@ -2,6 +2,21 @@ import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
   transpilePackages: ["@multica/ui", "@multica/store"],
+  headers: async () => [
+    {
+      source: "/sw.js",
+      headers: [
+        {
+          key: "Cache-Control",
+          value: "no-cache, no-store, must-revalidate",
+        },
+        {
+          key: "Content-Type",
+          value: "application/javascript; charset=utf-8",
+        },
+      ],
+    },
+  ],
 };
 
 export default nextConfig;
diff --git a/apps/web/public/icon-192x192.png b/apps/web/public/icon-192x192.png
new file mode 100644
index 00000000..5593b1e0
Binary files /dev/null and b/apps/web/public/icon-192x192.png differ
diff --git a/apps/web/public/icon-512x512.png b/apps/web/public/icon-512x512.png
new file mode 100644
index 00000000..be39f414
Binary files /dev/null and b/apps/web/public/icon-512x512.png differ
diff --git a/apps/web/public/sw.js b/apps/web/public/sw.js
new file mode 100644
index 00000000..2d8efcb4
--- /dev/null
+++ b/apps/web/public/sw.js
@@ -0,0 +1,40 @@
+const CACHE_NAME = "multica-v1";
+
+// App shell resources to precache
+const PRECACHE_URLS = ["/~offline"];
+
+self.addEventListener("install", (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME).then((cache) => cache.addAll(PRECACHE_URLS))
+  );
+  self.skipWaiting();
+});
+
+self.addEventListener("activate", (event) => {
+  // Clean up old caches
+  event.waitUntil(
+    caches.keys().then((names) =>
+      Promise.all(
+        names
+          .filter((name) => name !== CACHE_NAME)
+          .map((name) => caches.delete(name))
+      )
+    )
+  );
+  self.clients.claim();
+});
+
+self.addEventListener("fetch", (event) => {
+  // Only handle navigation requests (HTML pages)
+  if (event.request.mode === "navigate") {
+    event.respondWith(
+      fetch(event.request).catch(() =>
+        caches.match("/~offline").then(
+          (response) =>
+            response ||
+            new Response("Offline", { status: 503, statusText: "Offline" })
+        )
+      )
+    );
+  }
+});