Disappointed

It seems intended for children. Starts with a kindergarten doing about all the elements, sort of like the alphabet song.
The interface looks dated (think 1998 style websites). The narrative descriptions are informal，not professional. The onky useful info is pulled from Wolfram Alpha, which makes me wonder why I am paying for this app - I could go straight to Wolfram. In short: even at 80% discount its not worth the money.

Monk22442 about The Elements by Theodore Gray, v2.0.5