You've developed a very nice tool op. I took a peep at the website and I'm really impressed with what I saw. Some of the features I find interesting are the setting customization, dark theme mode and the asset sort out option. I'm going to watch the video later to learn more about your website.

A little suggestion, I see you added coinmarketcap in the currency tap, why not also add coingecko? Some persons prefer the realtime data from the later to be more accurate than the former.