On the week-end I seldomly use my computer and thus do not log in to Mathematics Stack Exchange from a browser. I do, however, use the (iOS) app to check for new questions or notifications on the weekends every day. Yet, my "Consecutive days visited" counter is always reduced to 1 after the week ends. It seems that in-app visits to Mathematics Stack Exchange do not count as actual visits to the site. Why is that so? Is this a bug or was this implemented on purpose?