It's simple, and the information could be contained in a book. However, it's one of those apps that reminds me why I bought the iPad in the first place. It connects video, an online site, and science projects you can do at home or in the classroom, and it fits in my purse, along with my library of books, iTunes U classes, textbooks, cookbooks, and a toolbox of timers, tools, and note-taking apps that help me all day. It's really well done, not heavy, it works on any iOS tablet or phone, and it's not overly animated, or "cute." This makes nanotechnology easily accessible to a parent, a child, or a teacher. I LOVE it!