Find out how many rides left you still have on your ticket!
You can discover the number of rides left, the last time you validated your ticket, and the time you have left until the end of the ride. All NFC tickets from GTT are compatible.
This is an open source application:
https://github.com/dslul/ticketreader
Feel free to report any issues or improvements here:
https://github.com/dslul/ticketreader/issues