>The self-order kiosk UI is quite bad.

Most repeat customers use the app, which sports the digital equivalent of a loyalty program, and various coupons. And lets you save your 'usual' order with customizations etc. Plus the annoying push notifications for FreeFrydays or whatever. And upsells, new product launches, etc.

My recollection is that the kiosk is just a weak facsimile of the app. And wasn't terrible, but everyone's standards vary.