Some more info:<p>It took me and my co-founder ~3 months of hard full-time work to build this first version.<p>We pull data straight from the exchanges (>30 at this time) and one of the most time consuming tasks is taking care of outlier prices, overpriced sales of small coin amounts, erroneous trades and the general instability of the 30+ APIs we consume.<p>We’re not 100% sure what our direction should be - suggestions welcome. We do intend to integrate with more exchanges, add more and more user features (ie a better portfolio that pulls data from exchanges, push notifications etc) and redo the whole UI.<p>Some links:<p>Main page: <a href="https://coinvision.io/" rel="nofollow">https://coinvision.io/</a><p>BTC page: <a href="https://coinvision.io/coin/BTC/Bitcoin" rel="nofollow">https://coinvision.io/coin/BTC/Bitcoin</a><p>Compare page: <a href="https://coinvision.io/compare" rel="nofollow">https://coinvision.io/compare</a>