I like how easy it was once you got used with using chrom tools! It allows me quick results that are accurate & precise without spending too much time doing so (which would be ideal). Nothing really - maybe some of their other features could've been improved or added but i feel they did an amazing job in what there offered currently already which makes up most people problems as far my experience goes anyways :) If your looking into this product go ahead because its very useful especially if u use chemistry frequently enough!!