Using edge mobile web standards, such as HTML5, jQuery Mobile etc., provide a smooth and rock-solid Touch-Optimized experience for all popular mobile device platforms. Also it use the webcache API for reduce network data usage.
“What’s my IP” web app, is available for any mobile web platform. Especialy for Firefox OS decives or devices with Firefox Browser, you can download and install the application from the Firefox Marketplace at https://marketplace.firefox.com/app/whats-my-ip/
For more info and instructions how to install it at your mobile home screen see at the application’s home page at /public-projects/whats-my-ip