diff --git a/README.md b/README.md
index 016a3b9..70b7b8c 100644
--- a/README.md
+++ b/README.md
@@ -75,15 +75,21 @@ npm install
 npm start
 ```
 
-The server starts on port 3020 by default. Open [http://localhost:3020](http://localhost:3020) in
-your browser.
+The server starts on port 3020, bound to `localhost` only, by default.
+Open [http://localhost:3020](http://localhost:3020) in your browser.
 
-To use a different port:
+Both can be overridden with environment variables:
 
 ```bash
-PORT=8080 npm start
+PORT=8080 npm start                        # different port
+BIND_ADDRESS=0.0.0.0 npm start             # all interfaces (LAN accessible)
+BIND_ADDRESS=192.168.1.50 npm start        # specific interface
+PORT=8080 BIND_ADDRESS=0.0.0.0 npm start   # both
 ```
 
+> **Note:** The default `localhost` binding means the app is only reachable from the same machine.
+> Set `BIND_ADDRESS=0.0.0.0` to expose it on your local network.
+
 ## Data Storage
 
 All data is stored locally in a `data/` directory created automatically on first run: