Not in the store, but we offer a Web App. Log in to FestivalNet on your mobile phone and go to your "my account" page. There, under "things to do" look for the "Add Shortcut to FN on homescreen"*. Click that and agree to that download. This will place the FestivalNet icon on your homescreen and when you click it, the launched Wep App will open "my account" page where you can then easily navigate the website.
* If you don't see this "Add Shortcut to FN on homescreen" link, it may be that the Web App is already installed on this device or your browser has limited support for Web Apps, i.e. Firefox browser.