I understand this is meant as a side-project for the author to learn new stuff. From his blog:
"It’s an online tool that I built for myself, and I hope other people can get some use out of it, I hav ported a lot of code in pyhon2 to python3 and I thouhgt thatthis web can help other people and also, it was a good oportunity for my, because I learned javascript and bootstrap for do it."