Is it worth buying a smart scale?

It has some advantages comparing to the traditional weight scale

I have a smart scale from vont.com, and I think it is as good as a traditional smart scale, with the only difference being that it has some very comfortable features. For example, I like that I have he appears on my mobile phone, and every time I weigh myself, the app saves the results, and after some time, I can check the progress I have achieved. I was always thinking that I was not losing weight and thinking that sport wasn't helping me, but after looking at the graphics in the app, I understood that I was achieving something but with small steps.