Comment by mcdeltat
Agreed, it's becoming silly. Particularly for thing that are infrequent. Like no I don't want to install an app to check into a flight given that I fly once a year. And of course each airline would have their own app. Forcing an app on me when your service is not a primarily digital product, or there's no reason why your product needs a special unique app, is a great shortcut to me hating your organisation.
Refuse the app and use the website. If there’s no website, complain.