I discovered Hype this morning as I was investigating iAuthor to create iBooks. It costs about $50.00. It creates HTML5 files to insert into your books to make them interactive. This is a very basic project. I added images and animated only a little. I added a video. I added sound. I had trouble using the built-in dictation feature so used insert video to add mp3 files I created on Audacity and that seemed to work. There are many features surrounding the images that I didn’t bother with and I certainly didn’t explore the animation options much.
I can see using this often to create exciting iBooks for my students or even having them create their own iBooks using my Macbook Pro.
Here is the link. I hope it works for you. You don’t have to be a dropbox user to see it.