Why would a mobile app have its home screen in the center of a navigation bar?

I've always seen icons in navigation bars display icons in order of importance from left to right (at least in the US), with the Home icon being aligned to the left.

However, I was testing out an app and the home screen is in the center of the navigation bar. My first impression was that this would be confusing, given the familiarity of left-to-right ordering, but I'm wondering if there's a reason for this?

One that I could imagine is that it might be more a "neutral" position when considering cultures that read right to left?