The interface is beautiful. The site is super responsive and I love the animations of the charts (when you modify them in real-time). The colors are nice, too. The fact that you can connect various sources is a wild PLUS, however, I immediately (and regretfully) refunded this deal when I found that I could not connect my Google Sheets. Most of my data exists in this form and is updated in real-time. That's what I needed ChartBrick for: to display data that updates in real-time. But, alas, this feature does not exist. So I asked for my money back.