diff --git a/INSTALL_THE_APP/README.md b/INSTALL_THE_APP/README.md
index 5003b68..693b435 100644
--- a/INSTALL_THE_APP/README.md
+++ b/INSTALL_THE_APP/README.md
@@ -10,6 +10,12 @@ This is one of three ways to use the CSF Profile Assessment Database:
| `GET_THE_SPREADSHEETS/` | You just want CSV/Excel artifacts to work in spreadsheets. |
| `GET_THE_NOTION_TEMPLATE/` | You prefer to assess inside Notion. Quick-start bundle and import guide. |
+## Install from your browser (no toolchain)
+
+The web app is a Progressive Web App: open a **production copy** in Chrome or Edge — a hosted deployment, or a local build served with `npm run build` then `npx serve -s build` — and click the **install icon** in the address bar (or menu → *Install CSF Profile Assessment*). You get a standalone app window, a launcher/dock icon, and offline support: after the first visit the app opens and runs with no connection. (The `npm start` dev server deliberately skips the offline worker so hot reload never fights a cache.) Your data already lives entirely in your browser's local storage, so nothing about installing changes where data goes.
+
+This is the fastest path on machines where you can't install Node or Rust — nothing to build, nothing to run as admin.
+
## Quick start
See the main [README — Installation and Setup](../README.md#installation-and-setup) for the full walkthrough. Short version:
diff --git a/package.json b/package.json
index 5f05f2d..88e7bc0 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
},
"scripts": {
"start": "react-scripts start",
- "build": "react-scripts build",
+ "build": "react-scripts build && node scripts/stamp-service-worker.mjs",
"test": "react-scripts test",
"eject": "react-scripts eject",
"tauri": "tauri",
diff --git a/public/apple-touch-icon.png b/public/apple-touch-icon.png
new file mode 100644
index 0000000..6edf9ed
Binary files /dev/null and b/public/apple-touch-icon.png differ
diff --git a/public/index.html b/public/index.html
index 40ce914..af6e4d8 100644
--- a/public/index.html
+++ b/public/index.html
@@ -9,7 +9,7 @@
name="description"
content="Free open-source NIST CSF 2.0 maturity assessment tool — score all 106 subcategories, track quarterly progress, visualize gaps on a dashboard radar, and export audit-ready CSV workpapers."
/>
-
+