Why in the world would this be a native app and not a web page?

Data collection, of course.

Or maybe the developer only knows mobile engineering? Not everything has to be seen from an uncharitable angle.

iOS encourages developers to make apps for their services because Safari's features and compatibility lag behind other browsers, and it doesn't implement PWA functionality.

And one of these "features" is arithmetic and displaying a number?

And what a strange name. Why is “shoot” treated like an expletive? I’m actually not even sure I’m parsing the name correctly.

Shoot! is a common substitute for other, more abrasive expletives (Shit! Fuck!). I'd much rather have the former in a business/service name!

Interestingly, the Android package name is indeed com.shitismoke.app

Right, but the point of using it is not to have to blank it out in form like this brand does. It would be like putting heck as hk.

The latest update it is giving me is 5 months ago (I'm in San Diego, CA), that seems hardly relevant.