I purchase this for my neice and she said it was just ok. This product makes alot of noise so you might want to mute it. Also, the links are design as if it is a space control panel. I would say this is a tool for childre who are beginners and non-english speakers.
This has four categories: Vocabulary, Spelling, Grammar, and Composition. I tried the spelling, and grammar, but I need to try the vocabulary and composition. Composition has to have the software when using it because it will not install like the other 3x. So far I like it, not too complicated because it is easy to follow.