We typically use Brain Pop jr, but my child has exhausted all the videos...we home school and find this a good supplement. My son enjoys Brain Pop with Tim and Moby as it has much "meatier" subjects and new content as compared to Brain Pop Jr. The program is automatically included with our homeschool program and releases regular Brain Pop for grade 3. Although I think my son is ready for most of the content, some was surprising. For example, under health and science there is a topic on menstral cycles, and another on drugs which mentions things like "crack or cocaine". I'm not ready for that, and I certainly don't want my child learning about certain details too early. Originally I felt this was a safe app he could watch independently when he wanted, but now I monitor each selection very closely. I wish the app had an option to "deselect" or "hide" certain topics so we could release for view when appropriate. Other than this issue, I think it's an amazing program.