I've considered making a similar app for Denmark's train and bus ticket checkers, but I expect it would get rule illegal and blocked.
https://www.thelocal.dk/20240529/what-happens-if-you-board-a...
https://www.thelocal.dk/20240529/what-happens-if-you-board-a...
Paying for public services is a duty of the public. Otherwise you won’t have public services anymore. It’s morally equivalent to being a tax cheat, in my view.
Entering a room, I could feel the anxiety as some people instinctively grabbed their phones to buy a ticket.