Strip Designer is a wonderful comic creation app ($2.99) for the iPad that is ideal for digital storytelling. This app allows users to select their layout and theme and then add pics from either camera or draw their own. Also, a user can add speech bubbles and a variety of stickers. Best of all a person can share their story by exporting to email as a jpg or PDF or sharing to popular social networking sites.
I recommend checking out Strip Designer by clicking here!!!