My Take
The app version is very simplistic. There are more advanced features on the website version, but for a quick animated presentation in the classroom, the app is the way to go. A great alternative to the PowerPoint presentations.
How I Use It
I use this app as an alternative to PowerPoint. It gives the student experience on different technology and is very animated. Students did not like that they had to set up an account just to use the Prezi. I find that the Ipad version is a little easier to use than the website version. Most of my students agreed. I have my students use this when presenting case studies and group assignments.