Check the git for a newer release and install it from the Car screen.

README.md

@@ -16,6 +16,8 @@ Each car has its own 8-digit token, shown on the **Car** screen. **Share token**
 
 **Remove from this phone** takes the car off that phone only. The other phone and the server keep it.
 
+**Check for updates** on the Car screen looks at the latest release on this git. When a newer one is posted, the app downloads it and Android asks you to install it.
+
 The book icon opens the setup guide. **Car setup** on the home screen is the original setup for the selected car, plus a log of later changes. A race night keeps its own chassis sheet.
 
 ## Sync server