This is something that has kind of baffled me for a while. In game engines, you often find node based visual scripting tools that let designers easily create functionality without requiring coding knowledge.
Good examples are probably Blueprints from Unreal Engine, uScript for Unity and FlowGraph for the CryEngine.
How come there are no such tools out there for either web development or app development? There are a lot of visual editors for web and mobile, but nothing for the logic itself.
Perhaps there is one, but I just haven't heard of it, or is there really no such product out there?