This is exactly the type of solution I come across every day in our organization and I absolutely hate it! I'm not criticize it from a technical point of view but it is very dangerous when such applications spread in an organization. Imagine to work in such an organization with hundreds of such tools and every user asks for support and new features. It can be helpful for a very specific and one off solution but never ever let it become something where you value chain is depending on without taking care of who will support it, where does it fit in your application landscape and others questions you have to ask you.

Sorry to spoil your day with this.