diff --git a/src/App.vue b/src/App.vue
index c948b82..6d704e5 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,5 +1,5 @@
 <script setup>
-import { onMounted, ref } from 'vue';
+import { computed, onMounted, onUnmounted, ref } from 'vue';
 import { usePuzzleStore } from './stores/puzzle';
 import { useI18n } from './composables/useI18n';
 import GameBoard from './components/GameBoard.vue';
@@ -16,11 +16,77 @@ const store = usePuzzleStore();
 const { t, locale, setLocale } = useI18n();
 const showCustomModal = ref(false);
 const showGuide = ref(false);
+const deferredPrompt = ref(null);
+const canInstall = ref(false);
+const installDismissed = ref(false);
+const isCoarsePointer = ref(false);
+const isStandalone = ref(false);
+let displayModeMedia = null;
+
+const installLabel = computed(() => {
+  return isCoarsePointer.value ? t('pwa.installMobile') : t('pwa.installDesktop');
+});
+
+const updateStandalone = () => {
+  isStandalone.value = window.matchMedia('(display-mode: standalone)').matches || window.navigator.standalone === true;
+  if (isStandalone.value) {
+    canInstall.value = false;
+    installDismissed.value = true;
+  }
+};
+
+const handleBeforeInstallPrompt = (e) => {
+  e.preventDefault();
+  deferredPrompt.value = e;
+  if (!isStandalone.value) {
+    canInstall.value = true;
+  }
+};
+
+const handleAppInstalled = () => {
+  deferredPrompt.value = null;
+  canInstall.value = false;
+  installDismissed.value = true;
+};
+
+const handleInstall = async () => {
+  if (!deferredPrompt.value) return;
+  deferredPrompt.value.prompt();
+  const choice = await deferredPrompt.value.userChoice;
+  deferredPrompt.value = null;
+  canInstall.value = false;
+  if (!choice || choice.outcome !== 'accepted') {
+    installDismissed.value = true;
+  }
+};
 
 onMounted(() => {
   if (!store.loadState()) {
     store.initGame(); // Inicjalizacja domyślnej gry jeśli brak zapisu
   }
+  if (typeof window !== 'undefined') {
+    isCoarsePointer.value = window.matchMedia('(pointer: coarse)').matches;
+    updateStandalone();
+    window.addEventListener('beforeinstallprompt', handleBeforeInstallPrompt);
+    window.addEventListener('appinstalled', handleAppInstalled);
+    displayModeMedia = window.matchMedia('(display-mode: standalone)');
+    if (displayModeMedia?.addEventListener) {
+      displayModeMedia.addEventListener('change', updateStandalone);
+    } else if (displayModeMedia?.addListener) {
+      displayModeMedia.addListener(updateStandalone);
+    }
+  }
+});
+
+onUnmounted(() => {
+  if (typeof window === 'undefined') return;
+  window.removeEventListener('beforeinstallprompt', handleBeforeInstallPrompt);
+  window.removeEventListener('appinstalled', handleAppInstalled);
+  if (displayModeMedia?.removeEventListener) {
+    displayModeMedia.removeEventListener('change', updateStandalone);
+  } else if (displayModeMedia?.removeListener) {
+    displayModeMedia.removeListener(updateStandalone);
+  }
 });
 </script>
 
@@ -37,6 +103,16 @@ onMounted(() => {
       <div class="underline"></div>
     </header>
 
+    <div v-if="canInstall && !installDismissed" class="install-banner">
+      <div class="install-text">{{ t('pwa.installTitle') }}</div>
+      <div class="install-actions">
+        <button class="btn-neon secondary install-btn" @click="handleInstall">
+          {{ installLabel }}
+        </button>
+        <button class="install-close" @click="installDismissed = true">×</button>
+      </div>
+    </div>
+
     <div class="game-layout">
       <!-- Level Selection -->
       <LevelSelector 
@@ -143,6 +219,57 @@ h1 {
   align-items: center;
 }
 
+.install-banner {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+  padding: 12px 16px;
+  border-radius: 16px;
+  background: rgba(0, 0, 0, 0.35);
+  border: 1px solid rgba(0, 242, 254, 0.35);
+  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
+  width: min(680px, 92vw);
+  margin: -10px 0 20px;
+}
+
+.install-text {
+  color: rgba(255, 255, 255, 0.9);
+  font-size: 0.95rem;
+  letter-spacing: 0.5px;
+}
+
+.install-actions {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+
+.install-btn {
+  padding: 8px 16px;
+  font-size: 0.85rem;
+}
+
+.install-close {
+  background: transparent;
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  color: #fff;
+  width: 32px;
+  height: 32px;
+  border-radius: 999px;
+  cursor: pointer;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 1.1rem;
+  line-height: 1;
+  transition: all 0.2s ease;
+}
+
+.install-close:hover {
+  border-color: #fff;
+}
+
 /* Remove old glass panel style from game-layout since we split it */
 .board-section {
   display: flex;
diff --git a/src/composables/useI18n.js b/src/composables/useI18n.js
index 9531f0a..9613528 100644
--- a/src/composables/useI18n.js
+++ b/src/composables/useI18n.js
@@ -45,7 +45,10 @@ const messages = {
     'win.shareX': 'X',
     'win.shareFacebook': 'Facebook',
     'win.shareWhatsapp': 'WhatsApp',
-    'win.shareDownload': 'Pobierz zrzut'
+    'win.shareDownload': 'Pobierz zrzut',
+    'pwa.installTitle': 'Zainstaluj aplikację i graj offline',
+    'pwa.installMobile': 'Dodaj do ekranu głównego',
+    'pwa.installDesktop': 'Zainstaluj na komputerze'
   },
   en: {
     'app.title': 'Nonograms',
@@ -84,7 +87,10 @@ const messages = {
     'win.shareX': 'X',
     'win.shareFacebook': 'Facebook',
     'win.shareWhatsapp': 'WhatsApp',
-    'win.shareDownload': 'Download screenshot'
+    'win.shareDownload': 'Download screenshot',
+    'pwa.installTitle': 'Install the app and play offline',
+    'pwa.installMobile': 'Add to home screen',
+    'pwa.installDesktop': 'Install on desktop'
   }
 };