I use the app frequently and I actually love it. Pick two stations, pick a train, apple pay, done. It’s not flashy, but I appreciate the simplicity.

I use the app daily and I ~hate it.

If you have a month pass it frequently forgets at the end of the month, and you have to repeatedly look it up. When you look a ticket, it doesn't remember it in the app, so you have to look it up again for your return trip.

It also periodically forgets all of your tickets locally and needs to resync from the network. It doesn't matter if you were just looking at the ticket three minutes ago. This ie especially annoying if your train is underground after leaving the station, and they are collecting tickets while you have no Internet access.

Yeah the mobile app is excellent