Unless you use it several times a day, downloading an "app" just gets in the way. You should never have to download an "app" for a one-time use.

We never went back to the restaurant in Cupertino where the table QR code tried to force downloading an app that onboarded you into a food delivery service. That restaurant was treating on-site customers as delivery orders with a very short delivery distance. The food wasn't very good, either.