Should you use Unity for a GUI application?

Question

Mobile development

Hello!

The task is to develop an application for two platforms, but due to the small budget, there is a question of using a cross-platform option.

The application is filled with a number of visual elements (gamification elements), but is not a game.
Now there is a choice between React native, Unity and Flutter.

Actually, the question is, is it worth it to make such a crutch and write in Unity?
Unity is one of the candidates because of the more convenient ability to make animations.
But the scary thing is that everything will slow down due to too much overhead.

Answer 1

I would not advise. You will have to make your own implementation of the UI (we are talking about the visual), but at the same time you lose support for the entire system, such as the same MaterialDesign.
Well, the weight of the application)

Answer 2

Games and multimedia systems of cars are sometimes made on QML - everything is fine with animations, nothing slows down, and out of the box there is a library of UI components with support for material design.

Answer 3

Not recommended. Better to use something more suitable