Just checked and I don't see it on Chrome for Android either. I'm afraid that means the API for file watching isn't available so it's had to fall back to a simple file loading.
If you want to do everything on Android I'm not sure there's much else you could do with the IDE. Potentially you could make your own Web Bluetooth page that tried to load the file repeatedly (if allowed) and send it over Bluetooth - it's pretty straightforward: http://www.espruino.com/Web+Bluetooth
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Just checked and I don't see it on Chrome for Android either. I'm afraid that means the API for file watching isn't available so it's had to fall back to a simple file loading.
If you want to do everything on Android I'm not sure there's much else you could do with the IDE. Potentially you could make your own Web Bluetooth page that tried to load the file repeatedly (if allowed) and send it over Bluetooth - it's pretty straightforward: http://www.espruino.com/Web+Bluetooth