diff --git a/src/lib/client/pwa.svelte.ts b/src/lib/client/pwa.svelte.ts
new file mode 100644
index 0000000..bc125ac
--- /dev/null
+++ b/src/lib/client/pwa.svelte.ts
@@ -0,0 +1,52 @@
+class PwaStore {
+  updateAvailable = $state(false);
+  private registration: ServiceWorkerRegistration | null = null;
+  private pollTimer: ReturnType<typeof setInterval> | null = null;
+
+  async init(): Promise<void> {
+    if (typeof navigator === 'undefined' || !('serviceWorker' in navigator)) return;
+    try {
+      this.registration = await navigator.serviceWorker.ready;
+    } catch {
+      return;
+    }
+    if (!this.registration) return;
+
+    // Wenn beim Mount schon ein neuer SW installiert und aktiv wartet,
+    // zeigen wir den Toast direkt an.
+    if (this.registration.waiting) {
+      this.updateAvailable = true;
+    }
+
+    this.registration.addEventListener('updatefound', () => this.onUpdateFound());
+
+    // Alle 30 Minuten aktiv nach Updates fragen, damit der User sie auch
+    // mitbekommt, wenn er die Seite lange offen lässt ohne zu navigieren.
+    this.pollTimer = setInterval(() => {
+      void this.registration?.update().catch(() => {});
+    }, 30 * 60_000);
+  }
+
+  private onUpdateFound(): void {
+    const installing = this.registration?.installing;
+    if (!installing) return;
+    installing.addEventListener('statechange', () => {
+      // 'installed' UND ein laufender controller = Update für bestehenden Tab.
+      // (Ohne controller wäre das die erste Installation, kein Update.)
+      if (installing.state === 'installed' && navigator.serviceWorker.controller) {
+        this.updateAvailable = true;
+      }
+    });
+  }
+
+  reload(): void {
+    this.updateAvailable = false;
+    location.reload();
+  }
+
+  dismiss(): void {
+    this.updateAvailable = false;
+  }
+}
+
+export const pwaStore = new PwaStore();
diff --git a/src/lib/components/UpdateToast.svelte b/src/lib/components/UpdateToast.svelte
new file mode 100644
index 0000000..bcf383b
--- /dev/null
+++ b/src/lib/components/UpdateToast.svelte
@@ -0,0 +1,110 @@
+<script lang="ts">
+  import { RefreshCw, X } from 'lucide-svelte';
+  import { pwaStore } from '$lib/client/pwa.svelte';
+</script>
+
+{#if pwaStore.updateAvailable}
+  <div class="toast" role="status" aria-live="polite">
+    <span class="msg">Neue Kochwas-Version verfügbar</span>
+    <button class="reload" onclick={() => pwaStore.reload()}>
+      <RefreshCw size={16} strokeWidth={2.2} />
+      <span>Neu laden</span>
+    </button>
+    <button class="dismiss" aria-label="Später" onclick={() => pwaStore.dismiss()}>
+      <X size={16} strokeWidth={2} />
+    </button>
+  </div>
+{/if}
+
+<style>
+  .toast {
+    position: fixed;
+    bottom: 1rem;
+    left: 50%;
+    transform: translateX(-50%);
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    padding: 0.6rem 0.85rem 0.6rem 1.1rem;
+    background: #1a1a1a;
+    color: white;
+    border-radius: 999px;
+    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
+    z-index: 500;
+    max-width: calc(100% - 2rem);
+    animation: slide-up 0.3s ease-out;
+    font-size: 0.92rem;
+  }
+  @keyframes slide-up {
+    from {
+      transform: translate(-50%, 130%);
+      opacity: 0;
+    }
+    to {
+      transform: translate(-50%, 0);
+      opacity: 1;
+    }
+  }
+  .msg {
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+  .reload {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.35rem;
+    padding: 0.4rem 0.85rem;
+    background: #2b6a3d;
+    color: white;
+    border: 0;
+    border-radius: 999px;
+    font-size: 0.88rem;
+    cursor: pointer;
+    font-weight: 600;
+    flex-shrink: 0;
+  }
+  .reload:hover {
+    background: #235532;
+  }
+  .dismiss {
+    background: transparent;
+    color: #aaa;
+    border: 0;
+    cursor: pointer;
+    padding: 4px;
+    display: inline-flex;
+    align-items: center;
+    border-radius: 999px;
+    flex-shrink: 0;
+  }
+  .dismiss:hover {
+    color: white;
+    background: rgba(255, 255, 255, 0.1);
+  }
+  @media (max-width: 420px) {
+    .toast {
+      left: 0.5rem;
+      right: 0.5rem;
+      transform: none;
+      max-width: none;
+      border-radius: 14px;
+    }
+    .msg {
+      flex: 1;
+      white-space: normal;
+      font-size: 0.85rem;
+      line-height: 1.25;
+    }
+    @keyframes slide-up {
+      from {
+        transform: translateY(130%);
+        opacity: 0;
+      }
+      to {
+        transform: translateY(0);
+        opacity: 1;
+      }
+    }
+  }
+</style>
diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index 0866220..2d247b4 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -5,9 +5,11 @@
   import { Settings, CookingPot, Globe, Utensils } from 'lucide-svelte';
   import { profileStore } from '$lib/client/profile.svelte';
   import { wishlistStore } from '$lib/client/wishlist.svelte';
+  import { pwaStore } from '$lib/client/pwa.svelte';
   import ProfileSwitcher from '$lib/components/ProfileSwitcher.svelte';
   import ConfirmDialog from '$lib/components/ConfirmDialog.svelte';
   import SearchLoader from '$lib/components/SearchLoader.svelte';
+  import UpdateToast from '$lib/components/UpdateToast.svelte';
   import type { SearchHit } from '$lib/server/recipes/search-local';
   import type { WebHit } from '$lib/server/search/searxng';
 
@@ -112,6 +114,7 @@
   onMount(() => {
     profileStore.load();
     void wishlistStore.refresh();
+    void pwaStore.init();
     document.addEventListener('click', handleClickOutside);
     document.addEventListener('keydown', handleKey);
     return () => {
@@ -122,6 +125,7 @@
 </script>
 
 <ConfirmDialog />
+<UpdateToast />
 
 <header class="bar">
   <div class="bar-inner">