Its not as polished as Apollo but years of development will do that for you.

I noticed at one point in the side swipe upvote the down vote and upvote waw pointing down just the color was changing

Highly recommend checking out wefwef - closest option to an Apollo clone as I've seen so far in terms of UI and functionality, and doesn't even need to be installed. Memmy is a very good second place option, but I've been using wefwef since I heard about it yesterday and ZI think it's better.

What app is that on the left

Which clients?