Compared to Django I find the Ruby tool chain to be much more polished. Getting things working on Django requires a lot of tweaking and tinkering.

This seems to be just a landing page to validate the idea. However it's quite a good idea.

I was very disappointed that it didn't even preload the images. Watching the spinner most of the time makes for a crappy UX.

The question is not whether to buy, but how many to buy.