This is the best so far and the most popular and widely used here in the forum. Is this your own website though? I'm just curious mate. One advantage though is that is has a bitcoin chart and you will see historically the wild price swings of bitcoin. Other than that, it mostly looks like preev with different background color. How do you get the formula for calculating though? You getting all the average from trading platforms?

Thanks for the share though, simple but effective.