Wonderscope doesn't require students to have any kind of log-in to use the stories in the app. Students simply open the app and tap the story to begin. Once the story is open students have to move around the room to make the animations appear on the screen. If students end up pointing the camera in a direction that isn't sustainable for the entirety of the story (looking at the ceiling, for example) they can reposition the animations. Once the animations appear students read the lines on the screen to unlock each chapter of a story. The animations in the story will talk to the students too. In the first story students pop balloons, position tea cups, and spin ferris wheels as part of the interaction with the stories.
Wonderscope includes one story for free and offers two others through in-app purchases. A fourth story is coming soon and, I presume, it will be available only through in-app purchase. Depending upon the age of your iPad, Wonderscope may not work for you. If you're in the market for a new iPad, Amazon has a great deal on current generation iPads for only $249 (current price as of 4:10pm on December 11th).
Applications for Education
Wonderscope is a great example of the potential for augmented reality to engage students in reading. The free story is fun and cute, but I'm not sure that every elementary school teacher would agree as it does have some funny (to kids) lines about burps and farts.
