Advertised as K-12 but cannot be used by students under 13 due to COPPA.

My Take

This is a great useful tool for elementary teachers creating offline content that kids can view outside of the classroom time. However, common sense regarding children recording themselves (photos, audio, video) and COPPA compliance means that kids under 13 cannot use it themselves. They aren't upfront about this and market it as K-12 but don't be fooled. Read their privacy-policy and the FTC's COPPA FAQ before asking students to use it.