This question already has an answer here:
I was looking at my profile on the iOS mobile app for Arqade, and I noticed that my top tag showed a score of 110.
However, I went and checked my profile on the site using my desktop, and it shows that my top tag is only 89.
My only conclusion is that the mobile app is bugged and includes my upvotes from questions with that tag as well, as I have 21 upvotes in total over my questions with that tag.