diff --git a/.fallowrc.json b/.fallowrc.json
index ba50fb5..022e0cc 100644
--- a/.fallowrc.json
+++ b/.fallowrc.json
@@ -3,7 +3,6 @@
   "entry": [
     "src/index.{ts,tsx,js,jsx}",
     "src/main.{ts,tsx,js,jsx}",
-    "apps/pwa/src/serviceWorker.ts",
     "apps/tauri/render-version.ts",
     "packages/**/*.test.ts"
   ],
diff --git a/apps/pwa/src/runtime.tsx b/apps/pwa/src/runtime.tsx
index 21c2556..d7917cc 100644
--- a/apps/pwa/src/runtime.tsx
+++ b/apps/pwa/src/runtime.tsx
@@ -1,4 +1,4 @@
-import { useEffect } from "react";
+import { useEffect, useState } from "react";
 import { toast } from "sonner";
 
 import { setDatabaseEntry } from "@tensamin/shared/indexedDb";
@@ -6,6 +6,11 @@ import { isTauri } from "@tauri-apps/api/core";
 
 import "./style.css";
 
+type BeforeInstallPromptEvent = Event & {
+  prompt: () => Promise<void>;
+  userChoice: Promise<{ outcome: "accepted" | "dismissed" }>;
+};
+
 const launchedFiles: File[] = [];
 const fileListeners = new Set<(file: File) => void>();
 
@@ -61,6 +66,9 @@ async function enablePush() {
 }
 
 export default function PwaRuntime() {
+  const [installPrompt, setInstallPrompt] =
+    useState<BeforeInstallPromptEvent | null>(null);
+
   useEffect(() => {
     if (
       isTauri() ||
@@ -121,6 +129,16 @@ export default function PwaRuntime() {
     };
   }, []);
 
+  useEffect(() => {
+    const handleInstallPrompt = (event: Event) => {
+      event.preventDefault();
+      setInstallPrompt(event as BeforeInstallPromptEvent);
+    };
+    window.addEventListener("beforeinstallprompt", handleInstallPrompt);
+    return () =>
+      window.removeEventListener("beforeinstallprompt", handleInstallPrompt);
+  }, []);
+
   useEffect(() => {
     const launchQueue = (
       window as Window & {
@@ -140,6 +158,39 @@ export default function PwaRuntime() {
     });
   }, []);
 
+  useEffect(() => {
+    if (!installPrompt) return;
+    toast("Install Tensamin for a native app experience", {
+      duration: Infinity,
+      action: {
+        label: "Install",
+        onClick: () => {
+          void installPrompt.prompt().then(() => installPrompt.userChoice);
+          setInstallPrompt(null);
+        },
+      },
+    });
+  }, [installPrompt]);
+
+  useEffect(() => {
+    const isAppleMobile = /iPad|iPhone|iPod/.test(navigator.userAgent);
+    if (
+      isTauri() ||
+      !isAppleMobile ||
+      isStandalone() ||
+      localStorage.getItem("pwa-ios-install-hint")
+    ) {
+      return;
+    }
+    localStorage.setItem("pwa-ios-install-hint", "shown");
+    toast(
+      "Install Tensamin from Safari's Share menu to enable background notifications.",
+      {
+        duration: 12_000,
+      },
+    );
+  }, []);
+
   useEffect(() => {
     if (
       !isStandalone() ||
diff --git a/apps/pwa/src/serviceWorker.ts b/apps/pwa/src/serviceWorker.ts
index 554ceeb..de341bb 100644
--- a/apps/pwa/src/serviceWorker.ts
+++ b/apps/pwa/src/serviceWorker.ts
@@ -34,22 +34,19 @@ function isPushPayload(value: unknown): value is PushPayload {
   const message = payload.message as
     Partial<PushPayload["message"]> | undefined;
   const secret = payload.secret as Partial<PushPayload["secret"]> | undefined;
-  const stringValues = [
-    payload.sender,
-    message?.content,
-    secret?.chatId,
-    secret?.secretId,
-    secret?.encryptedSecret,
-    secret?.kemCiphertext,
-    secret?.wrappingScheme,
-  ];
   return (
     payload.version === 1 &&
     typeof payload.senderId === "number" &&
     Number.isSafeInteger(payload.senderId) &&
     payload.senderId > 0 &&
-    typeof secret?.version === "number" &&
-    stringValues.every((item) => typeof item === "string")
+    typeof payload.sender === "string" &&
+    typeof message?.content === "string" &&
+    typeof secret?.chatId === "string" &&
+    typeof secret.secretId === "string" &&
+    typeof secret.version === "number" &&
+    typeof secret.encryptedSecret === "string" &&
+    typeof secret.kemCiphertext === "string" &&
+    typeof secret.wrappingScheme === "string"
   );
 }
 
diff --git a/flake.nix b/flake.nix
index d91a817..2b8781f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -17,7 +17,7 @@
       systems = [ "x86_64-linux" ];
       forAllSystems = nixpkgs.lib.genAttrs systems;
       version = "0.0.11";
-      x86_64DebHash = "sha256-p/6boNv9uWTHsPTVa3EhGzr41EwRzCY/fJWlj854DVA=";
+      x86_64DebHash = "sha256-E4FGMpCt2ByaN6d+YzglqeA6LbhMOQmPf3UzAj7uZXE=";
       forgejoBaseUrl = "https://git.methanium.net/tensamin/client/releases/download/${version}";
     in
     {