In the past, I tried out various programmes to create not just well-looking UI, but also wireframes and high-fidelity prototypes. I was faced with a piece of software I honestly had very little faith in (at the beginning).
I am talking about Adobe XD, Adobe's own UX/UI Tool.
In the beginning, I had (as I said) very little faith in it. Compared to its' competitors like Sketch and the upcoming invision Studio it honestly seemed kinda old-fashioned in the opportunities given for designers.