I used to use blockfolio to track my crypto asset's price movements but I switched to delta since a few months ago because I find it better than blockfolio. It support more exchange so it's easy to track most of my coin and their interface is simple and clean, delta also more responsive compared to blockfolio.
I also do the same thing, since yesterday I also tried to use delta apps, but to my surprise sometimes in the delta, there is a number of coins rising above the average.