productivity tool how do you like it?

Not so long ago I was advised to familiarize myself with productivity tool, which is presented at the link http://voiset.info/. I have never used it before and I would like to understand if it makes sense to familiarize myself with it and use it in my work? Is it convenient and is it worth spending time on it at all? I look forward to your advice!

I am an advocate of doing things the old fashioned way! I have a notebook and I fix everything there. Convenient and there will never be any failure and therefore no information will not be lost.