It's a good way to say, "Hey, not only did I develop this cool thing, I designed this cool thing."

Also, sometimes design is a focal point. All things being equal, I will choose the prettier option. I might even be persuaded to pay money for a prettier option if it functions just as well as the ugly open source option.

As will many. There's many powerful apps on the AppStores that are outshined by their prettier (and less capable) cousins.

As a heads up, designed by @mustefaj

Uhm, OK.

Aw Jorge :), don't be shy. High five.

Beautiful is not just in the design, I've put a lot of effort into the mechanics of how things work, as well.

While i agree that beautiful does come in no small part from the "mechanics of how things work" there's NO WAY TO KNOW that you've done that from the site. It's a static screenshot. To be honest the screenshot's a bit... simple and plain. Not terribly notable. Maybe it is a "beautiful" experience to use it, but I've got no way of knowing that without signing up for it. What's my incentive here? Why should I bother with yours when all i see is a simple screenshot with NO indication of ANY notable functionality or mechanics?

+1 times 100 at least.

The time and effort that goes into making something simple and easy is enormous. Very nice product!

Interaction design is the mechanics of how things work :)

These "beautiful" labels are also a little hard to take since they always seem to come from the creator of the darned thing, a source that's a bit biased.