Create a story with text, images, and video from your camera roll, Dropbox, and the cloud. Scroll through to read online and share. Interesting free option.
This is a very cool project where students created their own coral reefs and creatures, combined them via Box, and then animated them in PuppetPals (though it could have been Explain Everything).
Animoby is a sort of screencasting tool, but not really. The idea is to instantly create and publish products that include voice, drawings, and images.
Create comic books and illustrations that include monsters and superheroes. The images and drawing tools can be used for a variety of literacy & numeracy activities as well as storytelling.
In addition to being able to use the Fotopedia Reporter from the web, there's now an app. Choose from thousands of public domain images to create and share digital stories.
This is a great app for elementary aged students. They can practice telling a story by using the visual prompts. It records their narration into the app to play back later.