As a peek at this week’s Judaism page will show, there is now a myriad of online Judaica available.
So it was only a matter of time before someone launched a Passover Haggadah app for the iPad.
Developers Ribui, whose previous products include an interactive guide to Stonehenge, have brought out a Haggadah ebook with video, songs and pictures, which is intended to help preparation for Pesach.
Unfortunately, as far as I know, there is no halachic way actually to use an app at the Seder table.
Perhaps Elijah has the answer.