Dumb as a rock
It has absolutely no appeal to me, seems to be so limited that I can't see any use for it whatsoever, so I guess I'm not its targeted audience.
Free to use MIT App Inventor (AI2) for Android, with its in-cloud Blocky-style graphical drag-and-drop editor, is a much better approach to app development, giving a reasonable balance between ease of use and useful and usable app creation.
With a few more features that would be even more useful for casual app developers who want something quick and simple.
Biting the hand that feeds IT
