For those who use the Plantain transport card and have a phone with an NFC module (with support for Mifare Classic cards).
If you forgot how much money you have left on your card, there is no validator nearby, and you are interested in the balance right now, this application will help you out.
Just put your pass on your phone and the app will show you the balance.
If you use the card number from the top-up app, be sure to check it against the number on the card itself!
There is no replenishment here and is not planned in the future.
An important point - the NFC chip in the phone must support Mifare Classic cards. This is one of the reasons why the application may not see the map.