If all I’m doing is looking at your catalog, it should work in a mobile browser. That way if I - a Tarheel - find myself in the midwest, I can go “does Menards have 1/4-20 hanger bolts?”
I’ll install an app if it runs mainly on my phone, like a media player or a calculator or maybe even a file viewer. Mobile games…that ship has sunk, frankly.
And how many people in the world will use that? eight?