What is the meaning of the number in the upper-right corner of the Watchtower screen?

Just a suggestion. Switching back and forth in Watchtower the score is animated every time even if nothing has changed. I would prefer some kind of caching, i. e. animate only if something has changed or after some time has passed.

I prefer no animation at all; it adds no value (for me) and is distracting/annoying.

I'm using a professional App, not playing a slot machine...