eSpark is accessed on all devices, including iPads, at espark.app. One way to quickly direct students to to eSpark on their iPads is to install a web clip on their devices. Web clips are icons on iPads that look just like apps but open a website in the browser.
The web clip settings should be set up like this:
Label = "eSpark"
Icon can be found here and is also included below
The Full Screen checkbox should NOT be checked