It is definitely intended for beginners, but I wanted to let HN know about it since I've seen a lot of posts wondering "how I can teach my kid to program?" and think that this is a good app for that.

Despite all the downmodding, jpwagner's suggestion is on the money. What would most benefit the development of a tool like this is extensive understanding of how the target audience reacts to and applies it.

Lest we forget that COBOL and SQL were originally designed to be accessible to non-developer business-y types. One wonders how much UX testing they underwent.