Very interesting. I really like the concept of draggable digits. They are more compact than sliders, easier to make changes to and give better feedback. Now I wish this was a standard UI element / HTML input type.

Totally off topic, but that is an amazing Javascript library. Thank you.

That is absolutely incredible. Thank you!

This is a fantastic project. Why has it been kept secret? :-)

That's very nice. Worth a separate HN post, I think.